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Spool Performance - Corporate Logo
T#:18534631
Part#: SP-U-EA-S-2-L
Special Order: No Guaranteed ETA
$ 429.00 USD
Free Shipping on orders $49 and up
The Spool wireless Ethanol Analyzer kit is a very cost-effective and robust ethanol content and fuel temperature monitoring solution. With the included smartphone app, the analyzer paired with a GM ethanol sensor can display the in-tank fuel's ethanol concentration percentage and fuel temperatures in Fahrenheit. The Analyzer module incorporates the latest Bluetooth 4.0 low energy protocol which means very little battery usage on your smartphone and also leaves regular Bluetooth functions and connectivity on your smartphone untouched. Why do you need an Ethanol Analyzer solution? According to the latest ASTM guidelines, Ethanol blends rated E85 can have anywhere from 51% to 85% ethanol content. This means the E85 at your pump can in fact at times, be only E55 containing 55% ethanol. This uncertainty is of serious concern to enthusiasts who are running performance E85 tunes for their vehicles. Running a lower ethanol content fuel with a tune rated for a higher content can cause damage to your motor. Knowing the absolute ethanol content in the E85 fuel from your pumps helps you avoid those damages. Ethanol Sensor App Unlike competitors, our Ethanol Analyzer Apps are truly free of cost and features an Ethanol Mix calculator to make sure you get the perfect blend every time. With an ethanol analyzer kit, the App can automatically populate the in-tank fuel's E-content required for the calculations. The app can be downloaded and used even if you do not have our Analyzer kit and will let you estimate your mixes. Upgraded Fuel Lines The Ethanol analyzer kit comes with 6AN upgraded PTFE core Black Nylon Coated Braided stainless steel lines that are fully Ethanol compatible and Burst rated to extreme pressures.
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Spool Performance - Corporate Logo
T#:640962
Part#: SP-BMF8X-FP
Special Order: No Guaranteed ETA
$ 999.99 USD
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$ 999.99 USD
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BMW S55 Stage 3 Low-Pressure Fuel-Pump is an advanced upgrade designed to significantly enhance your vehicle's fueling system. Engineered by Spool Performance, a leader in the BMW Forced Induction industry, this fuel pump provides a substantial increase in fuel flow to support high-performance driving. The Stage 3 Low-Pressure Fuel-Pump more than doubles the flow rate of the stock fuel pump and is fully compatible with E85 fuels. It offers a plug-and-play installation for easy integration and comes with a lifetime warranty for peace of mind.

  • Increased Fuel Flow: Provides more than double the flow capacity of the stock fuel pump, supporting greater power output.
  • E85 Compatibility: Fully capable of handling E85 fuel, enhancing performance and efficiency.
  • Easy Installation: Plug-and-play design ensures a straightforward installation with no modifications required.
  • Lifetime Warranty: Comes with a lifetime warranty, reflecting Spool Performance’s commitment to quality and reliability.
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Spool Performance - Corporate Logo
T#:640951
Part#: SP-BMFXXN-FP
Special Order: No Guaranteed ETA
$ 749.00 USD
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$ 749.00 USD
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Stage 3 LPFP upgrade kit for your N55 engine

Spool Performance - Corporate Logo
T#:640947
Part#: SP-BM54FP-S3
Special Order: No Guaranteed ETA
$ 599.00 USD
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$ 599.00 USD
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Stage 3 LPFP upgrade kit for your N54 engine

Spool Performance - Corporate Logo
T#:31291063
Part#: SP-B58-FX350-NEY
Special Order: No Guaranteed ETA
$ 2,348.00 USD
Free Shipping on orders $49 and up
The FX-350 is truly Plug and Play for all platforms we are offering and comes with all the lines and hardware needed for a clean easy install.
Spool Performance - Corporate Logo
T#:640931
Part#: SP-FX-150-B58
Special Order: No Guaranteed ETA
$ 1,399.00 USD
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$ 1,399.00 USD
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B58 High-Pressure Fuel-pump | Spool Performance delivers exceptional performance for BMW enthusiasts seeking to upgrade their vehicle’s fuel system. Designed by the innovative engineers at Spool Performance, this high-pressure fuel pump significantly enhances fuel flow and power, making it an ideal choice for those looking to push the limits of their BMW's performance.

  • Increased Flow Rate: Provides 50% more flow compared to stock pumps (Stock @ .954 cc per rev vs. FX-150 @ 1.43 cc per rev).
  • Enhanced Fuel Limits: Supports larger turbos and higher ethanol concentration blends for increased performance.
  • Easy Installation: Plug-and-play design for straightforward installation.
  • E85 Compatibility: Suitable for use with E85 fuel blends.
  • Lifetime Warranty: Backed by a lifetime warranty from Spool Performance.

Important Note: The upgraded pump requires calibration changes before installation to prevent damage and warranty voidance. Ensure these changes are applied prior to starting the vehicle with the new pump installed.

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Spool Performance - Corporate Logo
T#:640967
Part#: SP-U-EA-S-2
Special Order: No Guaranteed ETA
$ 352.99 USD
Free Shipping on orders $49 and up
The Spool wireless Ethanol Analyzer kit is a very cost-effective and robust ethanol content and fuel temperature monitoring solution. With the included smartphone app, the analyzer paired with a GM ethanol sensor can display the in-tank fuel's ethanol concentration percentage and fuel temperatures in Fahrenheit. The Analyzer module incorporates the latest Bluetooth 4.0 low energy protocol which means very little battery usage on your smartphone and also leaves regular Bluetooth functions and connectivity on your smartphone untouched. Why do you need an Ethanol Analyzer solution? According to the latest ASTM guidelines, Ethanol blends rated E85 can have anywhere from 51% to 85% ethanol content. This means the E85 at your pump can in fact at times, be only E55 containing 55% ethanol. This uncertainty is of serious concern to enthusiasts who are running performance E85 tunes for their vehicles. Running a lower ethanol content fuel with a tune rated for a higher content can cause damage to your motor. Knowing the absolute ethanol content in the E85 fuel from your pumps helps you avoid those damages. Ethanol Sensor App Unlike competitors, our Ethanol Analyzer Apps are truly free of cost and features an Ethanol Mix calculator to make sure you get the perfect blend every time. With an ethanol analyzer kit, the App can automatically populate the in-tank fuel's E-content required for the calculations. The app can be downloaded and used even if you do not have our Analyzer kit and will let you estimate your mixes. Upgraded Fuel Lines The Ethanol analyzer kit comes with 6AN upgraded PTFE core Black Nylon Coated Braided stainless steel lines that are fully Ethanol compatible and Burst rated to extreme pressures.
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Spool Performance - Corporate Logo
T#:15976515
Part#: SP-FX-180-B58
Special Order: No Guaranteed ETA
$ 1,899.00 USD
Free Shipping on orders $49 and up
NOTE: This kit includes the optional Stainless Steel High Pressure Fuel Line offered by Spool The FX-180 is an upgraded high-pressure fuel pump for the BMW B58 motor. The pump features a bigger bore size than stock that translates into roughly 80% more flow when compared to stock. The pump is completely E85 compatible and fully plug and play with no cutting or splicing of any kind required. The added flow will let you run much higher ethanol concentrations and also allow fueling for bigger turbos. Flow Rates based on B58 stock CAM lift: Stock B58 Pump - 0.954 cc per rev FX-180 - 1.7 cc per rev Why do you need it? The stock HPFP on B58 motor is severely limited in capacity when trying to tune and raise the output of the motor. The FX-180 adds 80% more flow to the equation, raising the fueling limits on the platform and helping you run bigger turbos and/or higher ethanol concentration blends. Are tune changes required? The upgraded pump does require calibration changes. It is important to apply these changes prior to starting the car with pump installed to avoid any possible damage and void of warranty. Spool Performance can provide calibration details to your existing tuner and/or help you connect with established tuners who are experienced with these pumps. Custom tuning is required to get maximum output out of the upgraded pump setup for your specific vehicle setup and ambient conditions. Spool Performance is a hardware manufacturer and does not provide custom tunes, but can assist with questions your tuner may have. Low Pressure Fuel Pump Upgrade: Proper low pressure fueling is extremely important for proper functioning and durability of the high pressure pumps and injectors in a DI system. Inadequate low pressure fueling can cause damage to the pump piston and bore as they are lubricated by controlled leakage of fuel. Resulting damage from low pressure starvation is detectable and would be cause for voided warranties. Please make sure you plan out your fuel system build with proper low pressure upgrades when necessary. NOTE: NOT COMPATIBLE WITH B58TU ENGINE
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Spool Performance - Corporate Logo
T#:20320741
Part#: SP-BMB58-FP
Special Order: No Guaranteed ETA
$ 1,148.99 USD
Free Shipping on orders $49 and up

Genuine BMW Motorsport - Corporate Logo
T#:396369
Part#: 12311311449KT
Ships on Sep 10, 2026
$ 1,696.99 USD
Free Shipping on orders $49 and up

Group A racecars were the top of their class in both touring car and rally racing. Heavily modified and extremely fast these cars set out to demonstrate the best of what a manufacturer could do on the racetrack. It was the predecessor to the current DTM class racing and set a standard for many other divisions of motorsport to follow.  

One of the weaker points of the S14 engine, when speaking from a racing standpoint is the belt drive system. While fine for a street going car, a V-belt is not suitable for high RPM applications. On the track, most of your time will be spent in the higher rev range which puts extreme amounts of stress on the factory setup. BMW realised this and came up with a solution that involved doing away with the V belt system and using a 6 rib serpentine style instead.

Extremely resistant to slippage and failure this design holds up much better the abuse of track duty and won't leave you stranded and waiting for tow back to the pit. Additionally, this kit does not accommodate and a/c compressor and the alternator and waterpump are underdriven by way of slightly larger pulleys. Combined, this puts less of a load on the crankshaft which leads to more efficient power delivery to the ground. If you track you E30 M3, this is an essential upgrade and until now was extremely difficult to source. Do not skip this pivotal step in your engine build or overhaul and get a leg up on the competition the Group A way.
Please note this kit is special order and in non-returnable

Features:

  • Kit replaces all engine pulleys and crank damper
  • Includes 6 rib serpentine belt
  • Underdriven waterpump and alternator pulleys
  • Recommended for off road and racing use only 

This kit fits the following BMWs:
1986-1992 BMW M3 All 
 

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Spool Performance - Corporate Logo
T#:35559422
Part#: SPB58FX350NEYF15
Special Order: No Guaranteed ETA
$ 2,348.00 USD
Free Shipping on orders $49 and up
Spool Performance - Corporate Logo
T#:29500088
Part#: SP-INJ-S63IFX350
Special Order: No Guaranteed ETA
$ 2,399.00 USD
Free Shipping on orders $49 and up

Spool Performance introduces the IFX 350, an upgraded DI injector specifically designed for the Gen2 S63 platform. Engineered for enthusiasts who demand both power and OEM-level reliability, the IFX 350 injectors excel in maintaining smooth engine idle and low-load performance while providing unmatched power potential. Features:

Enhanced Flow Rate: Boosts fuel flow by 40% compared to stock injectors. Superior Fuel Delivery: Consistent performance at pressures up to 390 bar. Maintained OEM Functionality: Retains stock-like idle and low-load performance, ensuring full Bosch CVO correction capability. Backed by rigorous development and testing, the IFX 350 injectors are the ultimate solution for those aiming for four-digit horsepower figures while preserving engine reliability and smoothness.

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Spool Performance - Corporate Logo
T#:37385971
Part#: SP-FX-200-N20-NE
Special Order: No Guaranteed ETA
$ 1,799.00 USD
Free Shipping on orders $49 and up
Schwaben - Corporate Logo
T#:395239
Part#: 020929SCH01A
Ships on Sep 1, 2026
Sale - Save 15% $ 319.99

This product was last offered at the strikethrough price on
05-03-2026

$ 271.99 USD
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Sale - Save 15%
$ 319.99

This product was last offered at the strikethrough price on
05-03-2026

$ 271.99 USD
Free Shipping

This gauge ensures that the inlet and exhaust cams are aligned perfectly. Make sure the edges are on the correct sides of the cylinder head before using.

Includes two alignment pin's which is ideal for inspection and servicing the motor with the timing chain still attached. If you are going to be removing the timing chain for service, you will need to lock both cams. 

The Ultimate kit includes every thing the standard kit does along with, a second alignment bridge, flywheel lock pin, VANOS alignment tools. and 4 bolt crank socket.

This tool fits all S54 powered BMW, including: 
2001-2006 E46 BMW M3
2001-2002 E36/7 BMW Z3M Coupe Z3M Roadster
2006-2008 E85/6 BMW Z4M Coupe Z4M Roadster
 

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Genuine BMW - Corporate Logo
T#:14807
Part#: 12311735708
Special Order: No Guaranteed ETA
4% off MSRP $ 76.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 73.99 USD
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4% off MSRP
$ 76.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 73.99 USD
Free Shipping


Genuine BMW Intake Manifold -
This item fits the following BMW Chassis:
E34

Fits BMW Engines including:
M50


Enthusiast Bundles - Corporate Logo
T#:37284806
Part#: 048013LAEBKT1
Ships in 3 Business Days
Sale - Save 6% $ 876.09

This product was last offered at the strikethrough price on
05-05-2026

$ 824.09 USD
Sale - Save 6%
$ 876.09

This product was last offered at the strikethrough price on
05-05-2026

$ 824.09 USD

B46/B48 Center Muffler and Resonator Delete - F30/F31/F32/F33/F36:

Upgrade your F chassis with the B46/B48 3" Center Muffler and Resonator Delete for a deeper, more liberating exhaust tone. This modification offers a direct swap for the factory center exhaust section, effectively enhancing both sound and performance.

Experience a distinct shift in exhaust tone, accompanied by improved flow efficiency and the elimination of factory exhaust bottlenecks. The Turner Motorsport B46/B48 Resonator Delete replaces the cumbersome factory center muffler and resonator with lightweight, high-flow T304 stainless steel 3.0" exhaust tubing.

Not only does this upgrade deliver a more pronounced exhaust note, but it also contributes to a smoother flow path, reducing restrictions and enhancing overall performance. Plus, shedding approximately 6 lbs, this mid-pipe replacement offers a practical, cost-effective solution for those seeking an enhanced driving experience without the need to replace the entire exhaust system. Fully compatible with both the front downpipe and rear muffler, it's a seamless addition to your vehicle's setup.

Features and benefits:

Enhanced exhaust tone Simple installation (with instructions!) 6lb weight savings! (Removes center muffler and center resonator) Good looking and durable 304 stainless steel construction Heavy-duty fabricated sheet metal exhaust hangers Direct bolt-on to the factory downpipe Includes factory front clamp and rear sleeve clamp for full installation Kit Includes:

Front exhaust section Mid-pipe exhaust Section Factory downpipe exhaust clamp Rear muffler sleeve clamp Installation and Support:

Installation is as easy as cutting, placing into position, and clamping! Tools you might want for the job: Exhaust hanger removal pliers - T379176 Exhaust pipe cutter - T38545 - CLICK HERE FOR INSTALLATION INSTRUCTIONS -

High-Performance Ignition Service Kit - Gen 1 B48/46 2.0L:

High performance ignition kit for your Gen 1 B46/48 featuring spark plugs, Turner high performance ignition coils and dielectric grease to make sure you have no issues at your next maintenance interval!

Our BMW ignition coils are designed with performance and efficiency in mind. An engine needs 3 main components to run (Air, Fuel, Spark.) Turner ignition coils are modified to increase energy output; more energy output results in a faster, more efficient and consistent burn to make sure your fuel is being utilized to its maximum potential. Our signature Turner ignition coils feature a blue housing that give your engine the performance and aesthetic your looking for.

Ignition coils should be changed every 40,000 - 60,000 miles and are an important maintenance item due to the essential role they play in your engines health, performance and efficiency. Choose Turner Ignition Coils to keep your engine running strong and healthy.

Features and Benefits:

Increased performance New spark plugs and grease Direct fitment Signature Turner Blue ignition coils

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Continental - Corporate Logo
T#:1896
Part#: 11287512762
In Stock
$ 9.17 USD
Free Shipping on orders $49 and up
$ 9.17 USD
Free Shipping on orders $49 and up
This belt drives the air conditioning compressor for the AC system. We recommend checking your belts every 10,000 miles. If your belts have excessive cracks, dry rot, missing teeth and/or grooves, are cause noise, it's time for new ones.

This item fits the following BMWs:
2003-2005 E46 BMW 325i 325ci 325xi 330i 330ci 30xi
2003 E39 BMW 525i 530i
2004-2006 E83 BMW X3 2.5i X3 3.0i
2003-2006 E53 BMW X5 3.0i
2003-2006 Z4 BMW Z4 2.5i Z4 3.0i
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Continental - Corporate Logo
T#:6746
Part#: 11287833264
In Stock at Vendor
$ 52.00 USD
Free Shipping on orders $49 and up
$ 52.00 USD
Free Shipping on orders $49 and up
This is the main drive belt / serpentine belt that drives all of the engine auxillaries, such as the alternator, waterpump, and power steering pump. If your belt has excessive cracks, dry rot, missing teeth and/or grooves, or are causing noise, it's time for a new one. 7K X 1629.

This item fits the following BMWs:
1997-1998 E39 BMW 540i
2000-2003 E39 BMW M5
1995-2001 E38 BMW 740i 740il
1990-1999 E31 BMW 840i 840ci
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Packaged by Turner - Corporate Logo
T#:401685
Part#: 11287512762KT3
In Stock
Sale - Save 3% $ 228.99

This product was last offered at the strikethrough price on
06-23-2026

$ 222.24 USD
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Sale - Save 3%
$ 228.99

This product was last offered at the strikethrough price on
06-23-2026

$ 222.24 USD
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This kit covers many of the common wear items that should be changed any time the serpentine belt is being replaced. As these cars gain years and mileage the belt tensioners will also need to be replaced along with the actual belts. It won't do any good to replace the belt if the tensioners are worn. This kit will save you time and money over buying these pieces individually. This kit includes an updated hydraulic alternator tensioner for added reliability and longevity.
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Packaged by Turner - Corporate Logo
T#:554445
Part#: M54ACCKT
In Stock
Sale - Save 3% $ 249.99

This product was last offered at the strikethrough price on
06-23-2026

$ 242.90 USD
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Sale - Save 3%
$ 249.99

This product was last offered at the strikethrough price on
06-23-2026

$ 242.90 USD
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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or over heated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.

Fits the following BMWs:
09/2002-2006 E53 BMW X5 M54
09/2002-2003 E39 BMW M54
09/2002-2005 E46 BMW M54

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Packaged by Turner - Corporate Logo
T#:554436
Part#: E39M5ACCKT
In Stock at Vendor
$ 674.99 USD
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$ 674.99 USD
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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or over heated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.

Fits the following BMWs:
1996-2003 E39 BMW M5

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Packaged by Turner - Corporate Logo
T#:593722
Part#: E83M54ABSKT
Ships in 1-2 days
$ 278.99

This product was last offered at the strikethrough price on
06-23-2026

$ 271.99 USD
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$ 271.99 USD
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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or overheated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need to be replaced such as the belts, tensioners, and hardware.
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Packaged by Turner - Corporate Logo
T#:589856
Part#: PBTABM62KT
Ships on Aug 25, 2026
Sale - Save 2% $ 531.99

This product was last offered at the strikethrough price on
05-03-2026

$ 519.30 USD
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Sale - Save 2%
$ 531.99

This product was last offered at the strikethrough price on
05-03-2026

$ 519.30 USD
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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or overheated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.
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Turner Motorsport - Corporate Logo
T#:340397
Part#: PPK-E46-M54
In Stock
Sale - Save 15% $ 377.99

This product was last offered at the strikethrough price on
06-13-2026

Starting at $ 321.29 USD
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Sale - Save 15%
$ 377.99

This product was last offered at the strikethrough price on
06-13-2026

Starting at $ 321.29 USD
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Underdrive Power Pulleys work to 'free up' horsepower. Any accessory that spins from the main drive belt is using up power. That's power that could otherwise be used to move the car. By giving some of that power back to the engine, you can make the car faster! It's like FREE HORSEPOWER !

Underdrive pulleys for your BMW will slow down engine-mounted accessories - the water pump, power steering pump, and alternator*. These systems contribute to 'parasitic losses' - power lost from what the engine could produce if it did not have these systems. Since less energy is used to move them, that power is transferred back to the engine and used to propel the car. Our pulleys give a 5-10% reduction in rotation, releasing up to 11hp on most BMW six-cylinder engines. There's also a small but noticeable improvement in throttle response too! We have done extensive testing and development work, both on and off the track, to ensure that the accessory systems function as they should. On our Racing pulley kits we actually underdrive certain components more so we feel our Street pulleys are an ideal compromise between power/torque gains, reliability, and system performance. Our pulley kits have been on the market for over ten years, and used in all of our own cars, with zero component failures related to their use.

Our pulleys are made from T-6061 aluminum and finished in a durable black hard anodize that is very resistant to wear, chemical exposure, and heat. We designed our pulleys to look similar to the factory parts but also to be stronger and, in most cases, slightly lighter too. For example, a Turner alternator pulley is less than half the weight of the stock steel pulley! With our hardcoat aluminum you will never have to worry about a serious failure of a stock plastic pulley. A 'stealth' approach to aesthetics was our goal and we let the results speak for the pulley design. Installation is straight forward and easy with simple hand tools. Removal of the fan is required for access to the front of the engine. Total install time for a 3-piece pulley set should be around 1.5 hours. A new longer belt is included and we also recommend replacing the separate A/C belt, belt tensioners, and the guide and deflection pulleys at the same time.

* Alternator Pulley Options
Bosch or Valeo? BMW built your car with either a Bosch or Valeo brand alternator. Unfortunately, the pulley is not the same for both brands. The brand is usually printed on the black plastic cover of the alternator but may be facing the frame rail or the ground. If you know which brand you have, select your option below and we'll send you the correct alternator pulley for your BMW. Don't know which you have? NO PROBLEM! We can send you both. The 2nd pulley costs $40 but you will receive a refund once we get the un-used pulley back (return shipping not included).

Stereo Systems. We offer our kits in two different ways: the full Power Pulley Kit with all 3 pulleys or a 2 pulley kit if you do not wish to underdrive your alternator (for large stereo systems or other battery-draining modifications). Our kits have been tested for compatability with the factory premium stereo systems (Harmon Kardon, etc). But any major alterations or upgrades from the factory system will work best with our 2 pulley kit and no underdriving of the alternator. For all stock stereo systems the 3 pulley set is recommended because the Turner alternator pulley will help make more power and is also much lighter than the stock pulley.

Additional Info
Clickhere for example dyno graph

Click here for installation instructions.


This underdrive pulley kit fits the following BMW:
2001-2006 E46 BMW 325i 325ci 325xi 330i 330ci 330xi
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Turner Motorsport - Corporate Logo
T#:340390
Part#: PPK-E36
In Stock
Sale - Save 25% $ 378.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 282.53 USD
Free Shipping
Sale - Save 25%
$ 378.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 282.53 USD
Free Shipping

Underdrive Power Pulleys work to 'free up' horsepower. Any accessory that spins from the main drive belt is using up power. That's power that could otherwise be used to move the car. By giving some of that power back to the engine, you can make the car faster! It's like FREE HORSEPOWER! We measured 10.7 whp at 6960 rpm and 8.1 lb-ft of torque at 5550 on a 1995 M3.

Underdrive pulleys for your BMW will slow down engine-mounted accessories - the water pump, power steering pump, and alternator*. These systems contribute to 'parasitic losses' - power lost from what the engine could produce if it did not have these systems. Since less energy is used to move them, that power is transferred back to the engine and used to propel the car. Our pulleys give a 10-20% reduction in rotation, releasing up to 11hp on most BMW six-cylinder engines. There's also a small but noticeable improvement in throttle response too! We have done extensive testing and development work, both on and off the track, to ensure that the accessory systems function as they should. On our Racing pulley kits we actually underdrive certain components more so we feel our Street pulleys are an ideal compromise between power/torque gains, reliability, and system performance. Our pulley kits have been on the market for over ten years, and used in all of our own cars, with zero component failures related to their use.

Our pulleys are made from T-6061 aluminum and finished in a durable black hard anodize that is very resistant to wear, chemical exposure, and heat. We designed our pulleys to look similar to the factory parts but also to be stronger and, in most cases, slightly lighter too. For example, a Turner alternator pulley is less than half the weight of the stock steel pulley! With our hardcoat aluminum you will never have to worry about a serious failure of a stock plastic pulley. A 'stealth' approach to aesthetics was our goal and we let the results speak for the pulley design. Installation is straight forward and easy with simple hand tools. Removal of the fan is required for access to the front of the engine. Total install time for a 3-piece pulley set should be around 1.5 hours. A new longer belt is included and we also recommend replacing the separate A/C belt, belt tensioners, and the guide and deflection pulleys at the same time.

Alternator Pulley Options
(click to expand)
Bosch or Valeo? BMW built your car with either a Bosch or Valeo brand alternator. Unfortunately, the pulley is not the same for both brands. The brand is usually printed on the black plastic cover of the alternator but may be facing the frame rail or the ground. If you know which brand you have, select your option below and we'll send you the correct alternator pulley for your BMW. Don't know which you have? NO PROBLEM! We can send you both. The 2nd pulley costs $40 but you will receive a refund once we get the un-used pulley back (return shipping not included).
Aftermarket Stereo Systems
(click to expand)
We offer our kits in two different ways: the full Power Pulley Kit with all 3 pulleys or a 2 pulley kit if you do not wish to underdrive your alternator (for large stereo systems or other battery-draining modifications). Our kits have been tested for compatability with the factory premium stereo systems (Harmon Kardon, etc). But any major alterations or upgrades from the factory system will work best with our 2 pulley kit and no underdriving of the alternator. For all stock stereo systems the 3 pulley set is recommended because the Turner alternator pulley will help make more power and is also much lighter than the stock pulley.


Additional Info
Clickhere for example dyno graph

Click here for installation instructions.


This underdrive pulley kit fits the following BMW:
1991-1995 E34 5 Series 525i without servotronic steering and without self-leveling
1992-1995 E36 3 Series 325i, 325is, 325ic
1995-1995 E36 M3 3.0 liter (S50) **US models only, coupe
1996-1999 E36 M3 3.2 liter (S52) **US models only, coupe, sedan, convertible
1997-2000 MZ3 Z3 M Roadster & Z3 M Coupe (US models, S52US)
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Turner Motorsport - Corporate Logo
T#:392994
Part#: PPKE36KT
In Stock
Sale - Save 15% $ 382.99

This product was last offered at the strikethrough price on
06-13-2026

$ 325.54 USD
Free Shipping
Sale - Save 15%
$ 382.99

This product was last offered at the strikethrough price on
06-13-2026

$ 325.54 USD
Free Shipping

BMW M50 S50 S52 Turner Motorsport Power Pulley Kit: Boost Your BMW's Performance

  • Increases horsepower and torque
  • Improves throttle response and acceleration
  • Lightweight design reduces rotating mass
  • Precision-engineered for perfect fitment

Upgrade your BMW's performance with the BMW M50 S50 S52 Turner Motorsport Power Pulley Kit. This kit is designed to increase horsepower and torque by reducing the rotational mass of the engine's accessories. With improved throttle response and acceleration, you'll experience a more dynamic driving experience. The lightweight design of the pulleys reduces rotating mass, resulting in improved engine efficiency. Plus, each pulley is precision-engineered for perfect fitment, ensuring seamless integration with your BMW's engine.

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Turner Motorsport - Corporate Logo
T#:340391
Part#: PPK-E36328
In Stock
Sale - Save 27% $ 370.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 269.23 USD
Free Shipping
Sale - Save 27%
$ 370.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 269.23 USD
Free Shipping
Underdrive Power Pulleys work to 'free up' horsepower. Any accessory that spins from the main drive belt is using up power. That's power that could otherwise be used to move the car. By giving some of that power back to the engine, you can make the car faster! It's like FREE HORSEPOWER ! We measured 10.7 whp at 6960 rpm and 8.1 lb-ft of torque at 5550 on a 1995 M3.

Underdrive pulleys for your BMW will slow down engine-mounted accessories - the water pump, power steering pump, and alternator*. These systems contribute to 'parasitic losses' - power lost from what the engine could produce if it did not have these systems. Since less energy is used to move them, that power is transferred back to the engine and used to propel the car. Our pulleys give a 10-20% reduction in rotation, releasing up to 11hp on most BMW six-cylinder engines. There's also a small but noticeable improvement in throttle response too! We have done extensive testing and development work, both on and off the track, to ensure that the accessory systems function as they should. On our Racing pulley kits we actually underdrive certain components more so we feel our Street pulleys are an ideal compromise between power/torque gains, reliability, and system performance. Our pulley kits have been on the market for over ten years, and used in all of our own cars, with zero component failures related to their use.

Our pulleys are made from T-6061 aluminum and finished in a durable black hard anodize that is very resistant to wear, chemical exposure, and heat. We designed our pulleys to look similar to the factory parts but also to be stronger and, in most cases, slightly lighter too. For example, a Turner alternator pulley is less than half the weight of the stock steel pulley! With our hardcoat aluminum you will never have to worry about a serious failure of a stock plastic pulley. A 'stealth' approach to aesthetics was our goal and we let the results speak for the pulley design. Installation is straight forward and easy with simple hand tools. Removal of the fan is required for access to the front of the engine. Total install time for a 3-piece pulley set should be around 1.5 hours. A new longer belt is included and we also recommend replacing the separate A/C belt, belt tensioners, and the guide and deflection pulleys at the same time.

* Alternator Pulley Options
Bosch or Valeo? BMW built your car with either a Bosch or Valeo brand alternator. Unfortunately, the pulley is not the same for both brands. The brand is usually printed on the black plastic cover of the alternator but may be facing the frame rail or the ground. If you know which brand you have, select your option below and we'll send you the correct alternator pulley for your BMW. Don't know which you have? NO PROBLEM! We can send you both. The 2nd pulley costs $40 but you will receive a refund once we get the un-used pulley back (return shipping not included).

Stereo Systems. We offer our kits in two different ways: the full Power Pulley Kit with all 3 pulleys or a 2 pulley kit if you do not wish to underdrive your alternator (for large stereo systems or other battery-draining modifications). Our kits have been tested for compatability with the factory premium stereo systems (Harmon Kardon, etc). But any major alterations or upgrades from the factory system will work best with our 2 pulley kit and no underdriving of the alternator. For all stock stereo systems the 3 pulley set is recommended because the Turner alternator pulley will help make more power and is also much lighter than the stock pulley.

Additional Info
Clickhere for example dyno graph

Click here for installation instructions.


This underdrive pulley kit fits the following BMW:
1996-1999 E36 BMW 323is 323ic 328i 328is 328ic
Show More Show Less

Turner Motorsport - Corporate Logo
T#:340403
Part#: PPK-Z3-M52TU
In Stock
Sale - Save 27% $ 370.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 269.23 USD
Free Shipping
Sale - Save 27%
$ 370.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 269.23 USD
Free Shipping
Underdrive Power Pulleys work to 'free up' horsepower. Any accessory that spins from the main drive belt is using up power. That's power that could otherwise be used to move the car. By giving some of that power back to the engine, you can make the car faster! It's like FREE HORSEPOWER !

Underdrive pulleys for your BMW will slow down engine-mounted accessories - the water pump, power steering pump, and alternator*. These systems contribute to 'parasitic losses' - power lost from what the engine could produce if it did not have these systems. Since less energy is used to move them, that power is transferred back to the engine and used to propel the car. Our pulleys give a 10-20% reduction in rotation, releasing up to 11hp on most BMW six-cylinder engines. There's also a small but noticeable improvement in throttle response too! We have done extensive testing and development work, both on and off the track, to ensure that the accessory systems function as they should. On our Racing pulley kits we actually underdrive certain components more so we feel our Street pulleys are an ideal compromise between power/torque gains, reliability, and system performance. Our pulley kits have been on the market for over ten years, and used in all of our own cars, with zero component failures related to their use.

Our pulleys are made from T-6061 aluminum and finished in a durable black hard anodize that is very resistant to wear, chemical exposure, and heat. We designed our pulleys to look similar to the factory parts but also to be stronger and, in most cases, slightly lighter too. For example, a Turner alternator pulley is less than half the weight of the stock steel pulley! With our hardcoat aluminum you will never have to worry about a serious failure of a stock plastic pulley. A 'stealth' approach to aesthetics was our goal and we let the results speak for the pulley design. Installation is straight forward and easy with simple hand tools. Removal of the fan is required for access to the front of the engine. Total install time for a 3-piece pulley set should be around 1.5 hours. A new longer belt is included and we also recommend replacing the separate A/C belt, belt tensioners, and the guide and deflection pulleys at the same time.

* Alternator Pulley Options
Bosch or Valeo? BMW built your car with either a Bosch or Valeo brand alternator. Unfortunately, the pulley is not the same for both brands. The brand is usually printed on the black plastic cover of the alternator but may be facing the frame rail or the ground. If you know which brand you have, select your option below and we'll send you the correct alternator pulley for your BMW. Don't know which you have? NO PROBLEM! We can send you both. The 2nd pulley costs $40 but you will receive a refund once we get the un-used pulley back (return shipping not included).

Stereo Systems. We offer our kits in two different ways: the full Power Pulley Kit with all 3 pulleys or a 2 pulley kit if you do not wish to underdrive your alternator (for large stereo systems or other battery-draining modifications). Our kits have been tested for compatability with the factory premium stereo systems (Harmon Kardon, etc). But any major alterations or upgrades from the factory system will work best with our 2 pulley kit and no underdriving of the alternator. For all stock stereo systems the 3 pulley set is recommended because the Turner alternator pulley will help make more power and is also much lighter than the stock pulley.

Additional Info
Clickhere for example dyno graph

Click here for installation instructions.


This underdrive pulley kit fits the following BMW:
1999-2000 Z3 BMW Z3 2.3 Z3 2.8
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Turner Motorsport - Corporate Logo
T#:187020
Part#: PPK-E46-M54
In Stock
Sale - Save 15% $ 377.99

This product was last offered at the strikethrough price on
06-13-2026

$ 321.29 USD
Free Shipping
Sale - Save 15%
$ 377.99

This product was last offered at the strikethrough price on
06-13-2026

$ 321.29 USD
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NOW LOCATED UNDER T#340397

BMW E46 Z3 M54 Turner Motorsport Power Pulley Kit - 325i/330i: Boost Your BMW's Performance

  • Increases horsepower and torque
  • Improves throttle response
  • Lightweight aluminum construction
  • Easy to install with basic tools

Upgrade your BMW's performance with the BMW E46 Z3 M54 Turner Motorsport Power Pulley Kit - 325i/330i. This kit increases horsepower and torque, resulting in improved acceleration and overall driving experience. The lightweight aluminum construction reduces rotational mass, enhancing throttle response and engine performance. Installation is easy with basic tools, making it a convenient upgrade for BMW enthusiasts.

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Turner Motorsport - Corporate Logo
T#:392993
Part#: PPKE36KT2
In Stock
Sale - Save 15% $ 382.99

This product was last offered at the strikethrough price on
06-13-2026

$ 325.54 USD
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Sale - Save 15%
$ 382.99

This product was last offered at the strikethrough price on
06-13-2026

$ 325.54 USD
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BMW E36 Z3 Turner Motorsport Power Pulley Kit is the ultimate performance upgrade for BMW enthusiasts. Designed by Turner Motorsport, this power pulley kit enhances engine performance and responsiveness, delivering an exhilarating driving experience. With its high-quality construction and precise engineering, it ensures durability and reliability for your BMW.

  • Designed by Turner Motorsport for optimal performance
  • Enhances engine performance and responsiveness
  • High-quality construction for durability
  • Precise engineering for reliability
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Turner Motorsport - Corporate Logo
T#:340395
Part#: PPK-E46
In Stock
Sale - Save 27% $ 370.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 269.23 USD
Free Shipping
Sale - Save 27%
$ 370.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 269.23 USD
Free Shipping
Underdrive Power Pulleys work to 'free up' horsepower. Any accessory that spins from the main drive belt is using up power. That's power that could otherwise be used to move the car. By giving some of that power back to the engine, you can make the car faster! It's like FREE HORSEPOWER !

Underdrive pulleys for your BMW will slow down engine-mounted accessories - the water pump, power steering pump, and alternator*. These systems contribute to 'parasitic losses' - power lost from what the engine could produce if it did not have these systems. Since less energy is used to move them, that power is transferred back to the engine and used to propel the car. Our pulleys give a 10-20% reduction in rotation, releasing up to 11hp on most BMW six-cylinder engines. There's also a small but noticeable improvement in throttle response too! We have done extensive testing and development work, both on and off the track, to ensure that the accessory systems function as they should. On our Racing pulley kits we actually underdrive certain components more so we feel our Street pulleys are an ideal compromise between power/torque gains, reliability, and system performance. Our pulley kits have been on the market for over ten years, and used in all of our own cars, with zero component failures related to their use.

Our pulleys are made from T-6061 aluminum and finished in a durable black hard anodize that is very resistant to wear, chemical exposure, and heat. We designed our pulleys to look similar to the factory parts but also to be stronger and, in most cases, slightly lighter too. For example, a Turner alternator pulley is less than half the weight of the stock steel pulley! With our hardcoat aluminum you will never have to worry about a serious failure of a stock plastic pulley. A 'stealth' approach to aesthetics was our goal and we let the results speak for the pulley design. Installation is straight forward and easy with simple hand tools. Removal of the fan is required for access to the front of the engine. Total install time for a 3-piece pulley set should be around 1.5 hours. A new longer belt is included and we also recommend replacing the separate A/C belt, belt tensioners, and the guide and deflection pulleys at the same time.

* Alternator Pulley Options
Bosch or Valeo?  BMW built your car with either a Bosch or Valeo brand alternator. Unfortunately, the pulley is not the same for both brands. The brand is usually printed on the black plastic cover of the alternator but may be facing the frame rail or the ground. If you know which brand you have, select your option below and we'll send you the correct alternator pulley for your BMW. Don't know which you have? NO PROBLEM! We can send you both. The 2nd pulley costs $40 but you will receive a refund once we get the un-used pulley back (return shipping not included).

Stereo Systems. We offer our kits in two different ways: the full Power Pulley Kit with all 3 pulleys or a 2 pulley kit if you do not wish to underdrive your alternator (for large stereo systems or other battery-draining modifications). Our kits have been tested for compatability with the factory premium stereo systems (Harmon Kardon, etc). But any major alterations or upgrades from the factory system will work best with our 2 pulley kit and no underdriving of the alternator. For all stock stereo systems the 3 pulley set is recommended because the Turner alternator pulley will help make more power and is also much lighter than the stock pulley.

Additional Info
Clickhere for example dyno graph

Click here for installation instructions.


This underdrive pulley kit fits the following BMW:
1999-2000 E46 BMW 323i 323ci 328i 328ci
Show More Show Less

Turner Motorsport - Corporate Logo
T#:340402
Part#: PPK-Z3-30
In Stock
Sale - Save 25% $ 369.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 277.63 USD
Free Shipping
Sale - Save 25%
$ 369.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 277.63 USD
Free Shipping
Underdrive Power Pulleys work to 'free up' horsepower. Any accessory that spins from the main drive belt is using up power. That's power that could otherwise be used to move the car. By giving some of that power back to the engine, you can make the car faster! It's like FREE HORSEPOWER !

Underdrive pulleys for your BMW will slow down engine-mounted accessories - the water pump, power steering pump, and alternator*. These systems contribute to 'parasitic losses' - power lost from what the engine could produce if it did not have these systems. Since less energy is used to move them, that power is transferred back to the engine and used to propel the car. Our pulleys give a 10-20% reduction in rotation, releasing up to 11hp on most BMW six-cylinder engines. There's also a small but noticeable improvement in throttle response too! We have done extensive testing and development work, both on and off the track, to ensure that the accessory systems function as they should. On our Racing pulley kits we actually underdrive certain components more so we feel our Street pulleys are an ideal compromise between power/torque gains, reliability, and system performance. Our pulley kits have been on the market for over ten years, and used in all of our own cars, with zero component failures related to their use.

Our pulleys are made from T-6061 aluminum and finished in a durable black hard anodize that is very resistant to wear, chemical exposure, and heat. We designed our pulleys to look similar to the factory parts but also to be stronger and, in most cases, slightly lighter too. For example, a Turner alternator pulley is less than half the weight of the stock steel pulley! With our hardcoat aluminum you will never have to worry about a serious failure of a stock plastic pulley. A 'stealth' approach to aesthetics was our goal and we let the results speak for the pulley design. Installation is straight forward and easy with simple hand tools. Removal of the fan is required for access to the front of the engine. Total install time for a 3-piece pulley set should be around 1.5 hours. A new longer belt is included and we also recommend replacing the separate A/C belt, belt tensioners, and the guide and deflection pulleys at the same time.

* Alternator Pulley Options
Bosch or Valeo?  BMW built your car with either a Bosch or Valeo brand alternator. Unfortunately, the pulley is not the same for both brands. The brand is usually printed on the black plastic cover of the alternator but may be facing the frame rail or the ground. If you know which brand you have, select your option below and we'll send you the correct alternator pulley for your BMW. Don't know which you have? NO PROBLEM! We can send you both. The 2nd pulley costs $40 but you will receive a refund once we get the un-used pulley back (return shipping not included).

Stereo Systems. We offer our kits in two different ways: the full Power Pulley Kit with all 3 pulleys or a 2 pulley kit if you do not wish to underdrive your alternator (for large stereo systems or other battery-draining modifications). Our kits have been tested for compatability with the factory premium stereo systems (Harmon Kardon, etc). But any major alterations or upgrades from the factory system will work best with our 2 pulley kit and no underdriving of the alternator. For all stock stereo systems the 3 pulley set is recommended because the Turner alternator pulley will help make more power and is also much lighter than the stock pulley.

Additional Info
Clickhere for example dyno graph

Click here for installation instructions.


This underdrive pulley kit fits the following BMW:
2001-2002 Z3 BMW Z3 3.0i
Show More Show Less

Turner Motorsport - Corporate Logo
T#:340401
Part#: PPK-Z3-25
In Stock
Sale - Save 23% $ 377.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 290.93 USD
Free Shipping
Sale - Save 23%
$ 377.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 290.93 USD
Free Shipping
Underdrive Power Pulleys work to 'free up' horsepower. Any accessory that spins from the main drive belt is using up power. That's power that could otherwise be used to move the car. By giving some of that power back to the engine, you can make the car faster! It's like FREE HORSEPOWER !

Underdrive pulleys for your BMW will slow down engine-mounted accessories - the water pump, power steering pump, and alternator*. These systems contribute to 'parasitic losses' - power lost from what the engine could produce if it did not have these systems. Since less energy is used to move them, that power is transferred back to the engine and used to propel the car. Our pulleys give a 10-20% reduction in rotation, releasing up to 11hp on most BMW six-cylinder engines. There's also a small but noticeable improvement in throttle response too! We have done extensive testing and development work, both on and off the track, to ensure that the accessory systems function as they should. On our Racing pulley kits we actually underdrive certain components more so we feel our Street pulleys are an ideal compromise between power/torque gains, reliability, and system performance. Our pulley kits have been on the market for over ten years, and used in all of our own cars, with zero component failures related to their use.

Our pulleys are made from T-6061 aluminum and finished in a durable black hard anodize that is very resistant to wear, chemical exposure, and heat. We designed our pulleys to look similar to the factory parts but also to be stronger and, in most cases, slightly lighter too. For example, a Turner alternator pulley is less than half the weight of the stock steel pulley! With our hardcoat aluminum you will never have to worry about a serious failure of a stock plastic pulley. A 'stealth' approach to aesthetics was our goal and we let the results speak for the pulley design. Installation is straight forward and easy with simple hand tools. Removal of the fan is required for access to the front of the engine. Total install time for a 3-piece pulley set should be around 1.5 hours. A new longer belt is included and we also recommend replacing the separate A/C belt, belt tensioners, and the guide and deflection pulleys at the same time.

* Alternator Pulley Options
Bosch or Valeo? BMW built your car with either a Bosch or Valeo brand alternator. Unfortunately, the pulley is not the same for both brands. The brand is usually printed on the black plastic cover of the alternator but may be facing the frame rail or the ground. If you know which brand you have, select your option below and we'll send you the correct alternator pulley for your BMW. Don't know which you have? NO PROBLEM! We can send you both. The 2nd pulley costs $40 but you will receive a refund once we get the un-used pulley back (return shipping not included).

Stereo Systems. We offer our kits in two different ways: the full Power Pulley Kit with all 3 pulleys or a 2 pulley kit if you do not wish to underdrive your alternator (for large stereo systems or other battery-draining modifications). Our kits have been tested for compatability with the factory premium stereo systems (Harmon Kardon, etc). But any major alterations or upgrades from the factory system will work best with our 2 pulley kit and no underdriving of the alternator. For all stock stereo systems the 3 pulley set is recommended because the Turner alternator pulley will help make more power and is also much lighter than the stock pulley.

Additional Info
Clickhere for example dyno graph

Click here for installation instructions.


This underdrive pulley kit fits the following BMW:
2001-2002 Z3 BMW Z3 2.5i
Show More Show Less
Turner Motorsport - Corporate Logo
T#:340394
Part#: PPK-E39-M54
In Stock
Sale - Save 25% $ 369.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 277.63 USD
Free Shipping
Sale - Save 25%
$ 369.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 277.63 USD
Free Shipping

Underdrive Power Pulleys work to 'free up' horsepower. Any accessory that spins from the main drive belt is using up power. That's power that could otherwise be used to move the car. By giving some of that power back to the engine, you can make the car faster! It's like FREE HORSEPOWER!

Underdrive pulleys for your BMW will slow down engine-mounted accessories - the water pump, power steering pump, and alternator*. These systems contribute to 'parasitic losses' - power lost from what the engine could produce if it did not have these systems. Since less energy is used to move them, that power is transferred back to the engine and used to propel the car. Our pulleys give a 10-20% reduction in rotation, releasing up to 11hp on most BMW six-cylinder engines. There's also a small but noticeable improvement in throttle response too! We have done extensive testing and development work, both on and off the track, to ensure that the accessory systems function as they should. On our Racing pulley kits we actually underdrive certain components more so we feel our Street pulleys are an ideal compromise between power/torque gains, reliability, and system performance. Our pulley kits have been on the market for over ten years, and used in all of our own cars, with zero component failures related to their use.

Our pulleys are made from T-6061 aluminum and finished in a durable black hard anodize that is very resistant to wear, chemical exposure, and heat. We designed our pulleys to look similar to the factory parts but also to be stronger and, in most cases, slightly lighter too. For example, a Turner alternator pulley is less than half the weight of the stock steel pulley! With our hardcoat aluminum you will never have to worry about a serious failure of a stock plastic pulley. A 'stealth' approach to aesthetics was our goal and we let the results speak for the pulley design. Installation is straight forward and easy with simple hand tools. Removal of the fan is required for access to the front of the engine. Total install time for a 3-piece pulley set should be around 1.5 hours. A new longer belt is included and we also recommend replacing the separate A/C belt, belt tensioners, and the guide and deflection pulleys at the same time.

* Alternator Pulley Options

Bosch or Valeo? BMW built your car with either a Bosch or Valeo brand alternator. Unfortunately, the pulley is not the same for both brands. The brand is usually printed on the black plastic cover of the alternator but may be facing the frame rail or the ground. If you know which brand you have, select your option below and we'll send you the correct alternator pulley for your BMW. Don't know which you have? NO PROBLEM! We can send you both. The 2nd pulley costs $40 but you will receive a refund once we get the un-used pulley back (return shipping not included).

Stereo Systems. We offer our kits in two different ways: the full Power Pulley Kit with all 3 pulleys or as a 2 pulley kit if you do not wish to underdrive your alternator (for large stereo systems or other critical-charging modifications). Our kits have been tested for compatability with the factory premium stereo systems (Harmon Kardon, etc). But any major upgrades from the factory premium systems will work best with our 2 pulley kit and no underdriving of the alternator. For all stock stereo systems the full 3-piece set is recommended because the Turner alternator pulley will help make more power and is also much lighter than the stock pulley.

Additional Info

Clickhere for example dyno graph

Click here for installation instructions.

Turner Pulley Kit contents:

 

  • Turner water pump pulley
  • Turner power steering pump pulley
  • Turner alternator pulley
  • new extended length belt
  • instructions


     
  • This underdrive pulley kit fits the following BMW:
    2001-2002 E39 BMW 525i 530i

 

Show More Show Less
Turner Motorsport - Corporate Logo
T#:340400
Part#: PPK-Z3
In Stock
Sale - Save 27% $ 370.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 269.23 USD
Free Shipping
Sale - Save 27%
$ 370.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 269.23 USD
Free Shipping
Underdrive Power Pulleys work to 'free up' horsepower. Any accessory that spins from the main drive belt is using up power. That's power that could otherwise be used to move the car. By giving some of that power back to the engine, you can make the car faster! It's like FREE HORSEPOWER !

Underdrive pulleys for your BMW will slow down engine-mounted accessories - the water pump, power steering pump, and alternator*. These systems contribute to 'parasitic losses' - power lost from what the engine could produce if it did not have these systems. Since less energy is used to move them, that power is transferred back to the engine and used to propel the car. Our pulleys give a 10-20% reduction in rotation, releasing up to 11hp on most BMW six-cylinder engines. There's also a small but noticeable improvement in throttle response too! We have done extensive testing and development work, both on and off the track, to ensure that the accessory systems function as they should. On our Racing pulley kits we actually underdrive certain components more so we feel our Street pulleys are an ideal compromise between power/torque gains, reliability, and system performance. Our pulley kits have been on the market for over ten years, and used in all of our own cars, with zero component failures related to their use.

Our pulleys are made from T-6061 aluminum and finished in a durable black hard anodize that is very resistant to wear, chemical exposure, and heat. We designed our pulleys to look similar to the factory parts but also to be stronger and, in most cases, slightly lighter too. For example, a Turner alternator pulley is less than half the weight of the stock steel pulley! With our hardcoat aluminum you will never have to worry about a serious failure of a stock plastic pulley. A 'stealth' approach to aesthetics was our goal and we let the results speak for the pulley design. Installation is straight forward and easy with simple hand tools. Removal of the fan is required for access to the front of the engine. Total install time for a 3-piece pulley set should be around 1.5 hours. A new longer belt is included and we also recommend replacing the separate A/C belt, belt tensioners, and the guide and deflection pulleys at the same time.

* Alternator Pulley Options
Bosch or Valeo? BMW built your car with either a Bosch or Valeo brand alternator. Unfortunately, the pulley is not the same for both brands. The brand is usually printed on the black plastic cover of the alternator but may be facing the frame rail or the ground. If you know which brand you have, select your option below and we'll send you the correct alternator pulley for your BMW. Don't know which you have? NO PROBLEM! We can send you both. The 2nd pulley costs $40 but you will receive a refund once we get the un-used pulley back (return shipping not included).

Stereo Systems. We offer our kits in two different ways: the full Power Pulley Kit with all 3 pulleys or a 2 pulley kit if you do not wish to underdrive your alternator (for large stereo systems or other battery-draining modifications). Our kits have been tested for compatability with the factory premium stereo systems (Harmon Kardon, etc). But any major alterations or upgrades from the factory system will work best with our 2 pulley kit and no underdriving of the alternator. For all stock stereo systems the 3 pulley set is recommended because the Turner alternator pulley will help make more power and is also much lighter than the stock pulley.

Additional Info
Clickhere for example dyno graph

Click here for installation instructions.


This underdrive pulley kit fits the following BMW:
1997-1998 Z3 BMW Z3 2.8
Show More Show Less


Turner Motorsport - Corporate Logo
T#:340392
Part#: PPK-E39
In Stock
Sale - Save 27% $ 370.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 269.23 USD
Free Shipping
Sale - Save 27%
$ 370.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 269.23 USD
Free Shipping

Underdrive Power Pulleys work to 'free up' horsepower. Any accessory that spins from the main drive belt is using up power. That's power that could otherwise be used to move the car. By giving some of that power back to the engine, you can make the car faster! It's like FREE HORSEPOWER!

Underdrive pulleys for your BMW will slow down engine-mounted accessories - the water pump, power steering pump, and alternator*. These systems contribute to 'parasitic losses' - power lost from what the engine could produce if it did not have these systems. Since less energy is used to move them, that power is transferred back to the engine and used to propel the car. Our pulleys give a 10-20% reduction in rotation, releasing up to 11hp on most BMW six-cylinder engines. There's also a small but noticeable improvement in throttle response too! We have done extensive testing and development work, both on and off the track, to ensure that the accessory systems function as they should. On our Racing pulley kits we actually underdrive certain components more so we feel our Street pulleys are an ideal compromise between power/torque gains, reliability, and system performance. Our pulley kits have been on the market for over ten years, and used in all of our own cars, with zero component failures related to their use.

Our pulleys are made from T-6061 aluminum and finished in a durable black hard anodize that is very resistant to wear, chemical exposure, and heat. We designed our pulleys to look similar to the factory parts but also to be stronger and, in most cases, slightly lighter too. For example, a Turner alternator pulley is less than half the weight of the stock steel pulley! With our hardcoat aluminum you will never have to worry about a serious failure of a stock plastic pulley. A 'stealth' approach to aesthetics was our goal and we let the results speak for the pulley design. Installation is straight forward and easy with simple hand tools. Removal of the fan is required for access to the front of the engine. Total install time for a 3-piece pulley set should be around 1.5 hours. A new longer belt is included and we also recommend replacing the separate A/C belt, belt tensioners, and the guide and deflection pulleys at the same time.

* Alternator Pulley Options

Bosch or Valeo? BMW built your car with either a Bosch or Valeo brand alternator. Unfortunately, the pulley is not the same for both brands. The brand is usually printed on the black plastic cover of the alternator but may be facing the frame rail or the ground. If you know which brand you have, select your option below and we'll send you the correct alternator pulley for your BMW. Don't know which you have? NO PROBLEM! We can send you both. The 2nd pulley costs $40 but you will receive a refund once we get the un-used pulley back (return shipping not included).

Stereo Systems. We offer our kits in two different ways: the full Power Pulley Kit with all 3 pulleys or as a 2 pulley kit if you do not wish to underdrive your alternator (for large stereo systems or other critical-charging modifications). Our kits have been tested for compatability with the factory premium stereo systems (Harmon Kardon, etc). But any major upgrades from the factory premium systems will work best with our 2 pulley kit and no underdriving of the alternator. For all stock stereo systems the full 3-piece set is recommended because the Turner alternator pulley will help make more power and is also much lighter than the stock pulley.

Additional Info

Clickhere for example dyno graph

Click here for installation instructions.

Turner Pulley Kit contents:

 

  • Turner water pump pulley
  • Turner power steering pump pulley
  • Turner alternator pulley
  • new extended length belt
  • instructions


     
  • This underdrive pulley kit fits the following BMW:
    1997-1998 E39 BMW 528i

 

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Genuine BMW - Corporate Logo
T#:41606
Part#: 13311730688
Special Order: No Guaranteed ETA
Sale - Save 19% $ 6.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 5.69 USD
Free Shipping on orders $49 and up
Sale - Save 19%
$ 6.99

This product was last offered at the strikethrough price on
05-14-2026

$ 5.69 USD
Free Shipping on orders $49 and up


Genuine BMW Fuel Pipe Bracket
This item fits the following BMW Chassis:
E36 M3,E36

Fits BMW Engines including:
M50,S50

Turner Motorsport - Corporate Logo
T#:340393
Part#: PPK-E39-M52TU
In Stock
Sale - Save 27% $ 370.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 269.23 USD
Free Shipping
Sale - Save 27%
$ 370.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 269.23 USD
Free Shipping

Underdrive Power Pulleys work to 'free up' horsepower. Any accessory that spins from the main drive belt is using up power. That's power that could otherwise be used to move the car. By giving some of that power back to the engine, you can make the car faster! It's like FREE HORSEPOWER!

Underdrive pulleys for your BMW will slow down engine-mounted accessories - the water pump, power steering pump, and alternator*. These systems contribute to 'parasitic losses' - power lost from what the engine could produce if it did not have these systems. Since less energy is used to move them, that power is transferred back to the engine and used to propel the car. Our pulleys give a 10-20% reduction in rotation, releasing up to 11hp on most BMW six-cylinder engines. There's also a small but noticeable improvement in throttle response too! We have done extensive testing and development work, both on and off the track, to ensure that the accessory systems function as they should. On our Racing pulley kits we actually underdrive certain components more so we feel our Street pulleys are an ideal compromise between power/torque gains, reliability, and system performance. Our pulley kits have been on the market for over ten years, and used in all of our own cars, with zero component failures related to their use.

Our pulleys are made from T-6061 aluminum and finished in a durable black hard anodize that is very resistant to wear, chemical exposure, and heat. We designed our pulleys to look similar to the factory parts but also to be stronger and, in most cases, slightly lighter too. For example, a Turner alternator pulley is less than half the weight of the stock steel pulley! With our hardcoat aluminum you will never have to worry about a serious failure of a stock plastic pulley. A 'stealth' approach to aesthetics was our goal and we let the results speak for the pulley design. Installation is straight forward and easy with simple hand tools. Removal of the fan is required for access to the front of the engine. Total install time for a 3-piece pulley set should be around 1.5 hours. A new longer belt is included and we also recommend replacing the separate A/C belt, belt tensioners, and the guide and deflection pulleys at the same time.

* Alternator Pulley Options

Bosch or Valeo? BMW built your car with either a Bosch or Valeo brand alternator. Unfortunately, the pulley is not the same for both brands. The brand is usually printed on the black plastic cover of the alternator but may be facing the frame rail or the ground. If you know which brand you have, select your option below and we'll send you the correct alternator pulley for your BMW. Don't know which you have? NO PROBLEM! We can send you both. The 2nd pulley costs $40 but you will receive a refund once we get the un-used pulley back (return shipping not included).

Stereo Systems. We offer our kits in two different ways: the full Power Pulley Kit with all 3 pulleys or as a 2 pulley kit if you do not wish to underdrive your alternator (for large stereo systems or other critical-charging modifications). Our kits have been tested for compatability with the factory premium stereo systems (Harmon Kardon, etc). But any major upgrades from the factory premium systems will work best with our 2 pulley kit and no underdriving of the alternator. For all stock stereo systems the full 3-piece set is recommended because the Turner alternator pulley will help make more power and is also much lighter than the stock pulley.

Additional Info

Clickhere for example dyno graph

Click here for installation instructions.

Turner Pulley Kit contents:

 

  • Turner water pump pulley
  • Turner power steering pump pulley
  • Turner alternator pulley
  • new extended length belt
  • instructions



     
  •  
  • This underdrive pulley kit fits the following BMW:
    1999-2000 E39 BMW 528i

 

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Turner Motorsport - Corporate Logo
T#:301180
Part#: TMS301180
In Stock
Sale - Save 20% $ 372.99

This product was last offered at the strikethrough price on
06-13-2026

$ 298.39 USD
Free Shipping
Sale - Save 20%
$ 372.99

This product was last offered at the strikethrough price on
06-13-2026

$ 298.39 USD
Free Shipping

Enhance your BMW's performance with the BMW E46 Z3 Turner Motorsport Power Pulley Kit 325i/330i Valeo Alternator. This high-quality power pulley kit is designed to increase horsepower and torque by reducing parasitic drag on the engine. With easy installation and precise fitment, this kit is a must-have upgrade for any BMW E46 or Z3 owner.

  • Increases horsepower and torque
  • Reduces parasitic drag on the engine
  • Easy installation process
  • Precise fitment ensures optimal performance
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Turner Motorsport - Corporate Logo
T#:340399
Part#: PPK-X5M54
In Stock
Sale - Save 25% $ 369.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 277.63 USD
Free Shipping
Sale - Save 25%
$ 369.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 277.63 USD
Free Shipping

Underdrive Power Pulleys work to 'free up' horsepower. Any accessory that spins from the main drive belt is using up power. That's power that could otherwise be used to move the car. By giving some of that power back to the engine, you can make the car faster! It's like FREE HORSEPOWER!

Underdrive pulleys for your BMW will slow down engine-mounted accessories - the water pump, power steering pump, and alternator*. These systems contribute to 'parasitic losses' - power lost from what the engine could produce if it did not have these systems. Since less energy is used to move them, that power is transferred back to the engine and used to propel the car. Our pulleys give a 10-20% reduction in rotation, releasing up to 11hp on most BMW six-cylinder engines. There's also a small but noticeable improvement in throttle response too! We have done extensive testing and development work, both on and off the track, to ensure that the accessory systems function as they should. On our Racing pulley kits we actually underdrive certain components more so we feel our Street pulleys are an ideal compromise between power/torque gains, reliability, and system performance. Our pulley kits have been on the market for over ten years, and used in all of our own cars, with zero component failures related to their use.

Our pulleys are made from T-6061 aluminum and finished in a durable black hard anodize that is very resistant to wear, chemical exposure, and heat. We designed our pulleys to look similar to the factory parts but also to be stronger and, in most cases, slightly lighter too. For example, a Turner alternator pulley is less than half the weight of the stock steel pulley! With our hardcoat aluminum you will never have to worry about a serious failure of a stock plastic pulley. A 'stealth' approach to aesthetics was our goal and we let the results speak for the pulley design. Installation is straight forward and easy with simple hand tools. Removal of the fan is required for access to the front of the engine. Total install time for a 3-piece pulley set should be around 1.5 hours. A new longer belt is included and we also recommend replacing the separate A/C belt, belt tensioners, and the guide and deflection pulleys at the same time.

* Alternator Pulley Options

Bosch or Valeo? BMW built your car with either a Bosch or Valeo brand alternator. Unfortunately, the pulley is not the same for both brands. The brand is usually printed on the black plastic cover of the alternator but may be facing the frame rail or the ground. If you know which brand you have, select your option below and we'll send you the correct alternator pulley for your BMW. Don't know which you have? NO PROBLEM! We can send you both. The 2nd pulley costs $40 but you will receive a refund once we get the un-used pulley back (return shipping not included).

Stereo Systems. We offer our kits in two different ways: a full power kit with all 3 pulleys or a 2 pulley kit for people who do not wish to underdrive their alternator (for large stereo systems or other battery-draining modifications). Our kits have been tested to be compatible with the factory premium stereo systems (Harmon Kardon, etc). But any major alterations or upgrades from the factory system may work best with our 2 pulley kit and no underdrive of the alternator. Otherwise, the 3 pulley kit is recommended because it not only underdrives the alternator but the Turner pulley is much lighter than the stock one.


Additional Info

Clickhere for example dyno graph

To learn more about Turner Power Pulleys, click here.

 

 


This Power Pulley Kit Fits the Following BMWs:
2000-2006 E53 BMW X5 3.0i

 

 

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Turner Motorsport - Corporate Logo
T#:395842
Part#: PPK-E46TU-VALEO
In Stock
Sale - Save 20% $ 382.99

This product was last offered at the strikethrough price on
06-13-2026

$ 306.39 USD
Free Shipping
Sale - Save 20%
$ 382.99

This product was last offered at the strikethrough price on
06-13-2026

$ 306.39 USD
Free Shipping

BMW E46 Turner Motorsport Power Pulley Kit

Improve the performance of your BMW E46 with the BMW E46 Turner Motorsport Power Pulley Kit. This high-quality pulley kit is designed to increase horsepower and torque by reducing parasitic drag on the engine. Here are the key benefits:

  • Increases horsepower and torque for improved acceleration
  • Reduces parasitic drag on the engine for enhanced efficiency
  • Precision-engineered for a perfect fit and easy installation
  • Durable construction ensures long-lasting performance

Enhance the performance and driving experience of your BMW E46 with the BMW E46 Turner Motorsport Power Pulley Kit.

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Genuine BMW - Corporate Logo
T#:7008
Part#: 11611726016
Ships in 6 Business Days
$ 15.99 USD
Free Shipping on orders $49 and up
BMW ENGINE GASKET ASBESTOS FREE 11611726016
Fits BMW Engines including:
M30

Genuine BMW - Corporate Logo
T#:44011
Part#: 16111183107
Special Order: No Guaranteed ETA
2% off MSRP $ 404.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 394.99 USD
Free Shipping
2% off MSRP
$ 404.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 394.99 USD
Free Shipping


Genuine BMW Plastic Filler Pipe - Obd Ii
This item fits the following BMW Chassis:
E36

Fits BMW Engines including:
M44,M52,S52


Deflection Pulley
We Price Match - Give Us A Call or Chat!
Ina - Corporate Logo
T#:593550
Part#: 11288604267
Special Order: No Guaranteed ETA
$ 49.48 USD
$ 49.48 USD

Ina - Corporate Logo
T#:568646
Part#: 11311439552
Ships in 7 Business Days
$ 55.99 USD
Free Shipping on orders $49 and up
Keeping tension on your timing chain is imperative for keeping your cams turning properly. If some slop develops in your chain because of a poor tensioner, the timing set can skip a tooth, causing catastrophic damage and potentially ruining your engine. This replacement can keep everything tight.
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Schwaben - Corporate Logo
T#:367037
Part#: 0161119SCH01A
In Stock
Sale - Save 23% $ 38.99

This product was last offered at the strikethrough price on
05-03-2026

$ 29.99 USD
Free Shipping on orders $49 and up
Sale - Save 23%
$ 38.99

This product was last offered at the strikethrough price on
05-03-2026

$ 29.99 USD
Free Shipping on orders $49 and up
The S54 engine is a great engine when it come to performance, but keeping up on the maintenance for the performance means valve shim adjustments regularly. While the job is not very difficult the fear of dropping shims in the engine can be stressful. The magnetic valve shim tool will allow you to set the shims in place without having this fear.
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Genuine BMW - Corporate Logo
T#:367622
Part#: 11321440256
Ships in 8 Business Days
$ 56.99 USD
Free Shipping on orders $49 and up
$ 56.99 USD
Free Shipping on orders $49 and up


Genuine BMW - Corporate Logo
T#:18982
Part#: 13901726705
In Stock
2% off MSRP $ 103.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 101.99 USD
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2% off MSRP
$ 103.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 101.99 USD
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FUEL TANK BREATHER VALVE 13901726705

SENSOR FUEL TANK VALVE
Fits BMWs:

Wiseco - Corporate Logo
T#:339073
Part#: WISECO2.5
Ships on Sep 18, 2026
Starting at $ 699.80 USD
Free Shipping
Starting at $ 699.80 USD
Free Shipping
The TMS/Wiseco 11.25:1 piston set was designed for use with the Evo3 2.5 liter crank and 2.3 connectig rods. The pistons are 95mm bore. Each set comes with rings, wrist pins and clips. Now also available in a +.25mm Overbore!

For seventy five years, Wiseco has been the piston of choice when it’s time to replace engine internals. To this day Wisco is one of the sole manufacturers of forged pistons within the United States and continues develop new and exciting products everyday.

Piston Specs:
Comp Height = 1.200
Bore Size = 3.7400 (as measured on piston skirt, 1.3" below oil ring)
Suggested Clearance = .0040
Weight = 388-389g (varies piston to piston)
Valve Pocket Dia. = 1.60 (i) / 1.40 (e)
Valve Pocket Angle = 18 (i) / 19.50 (e)
Depth from TE = -.1050 (i) / -.1350 (e)

This item fits the following BMWs:
1987-1991 E30 BMW M3 with Turner 2.5 Kit
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