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Turner Motorsport BMW Engine Parts

Turner Motorsport has everything you need to upgrade your BMW through our stages of performance or to keep your car in peak condition with our range of the latest in proven OEM cooling parts. Upgrade your cooling system and engine performance with the selections below to give your BMW a performance and reliability advantage.

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Turner Motorsport Power Pulley Upgrade Kit - Z3 2.5i 01-02
10X Entries Into Our F80 M3 Sweepstakes
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
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Starting at $ 290.93 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 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
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Turner Motorsport Power Pulley Kit - E9X M3 S65
10X Entries Into Our F80 M3 Sweepstakes
Adds up to 10-14hp and 7-9ft/lbs torque on a stock M3 | For vehicles with production date up to 04/200
Turner Motorsport - Corporate Logo
T#:395356
Part#: PPK-S65-EKT
Ships in 1 Business Day
Sale - Save 25% $ 535.99

This product was last offered at the strikethrough price on
06-14-2026

$ 401.99 USD
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$ 535.99

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$ 401.99 USD
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The idea of power pulleys is simple. The less effort the engine puts into running accessories such as the water pump, power steering, pump alternator etc., the more of that power can be used elsewhere - your wheels! The way this is done by reducing the rotation of the pulleys by as much as 10-20%! The end result is more horsepower at your disposal. Turner has done extensive testing (on and off the track), to ensure that the accessory systems still function as intended and without failure. These pulleys offer an excellent compromise of power gains, reliability, and performance.
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CSL Crankcase Vent Hose - AN Lines and Fittings (04.5-06)
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:17405917
Part#: 043464LA03
In Stock
Sale - Save 20% $ 177.99

This product was last offered at the strikethrough price on
06-14-2026

$ 142.39 USD
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Sale - Save 20%
$ 177.99

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$ 142.39 USD
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A combination of billet fittings and AN lines for an upgraded and serviceable crankcase vent hose. Attaches between the oil separator and the CSL air box.

The factory rubber/plastic hoses become brittle and crack over time. Brittle and cracked hoses can cause multiple vacuum leaks that are impossible to repair without hose replacement. Vacuum leaks can cause many problems including rough running, missing, stalling at idle, and even a no-start condition. The factory hoses offered by BMW are plastic and will yield the same results of becoming brittle and damaged over time.

We have created a full motorsport-style solution with our CSL Crankcase made from machined 6061 billet aluminum with AN-style fittings and nylon fiber braided lines. This is a fully serviceable replacement that will outlast every one of the OEM replacements. Our AN crankcase line can be used to replace the factory brittle hose to ensure your S54 is free from vacuum leaks and performing properly.

OEM CSL Vent Hose (11157833649) - Direct Replacement for cars with secondary shut-off valve. (11157834056)

Key benefits:

Lifetime replacement of the brittle OEM plastic crankcase breather hose
Fully Serviceable
Motorsport Aesthetic to compliment your CSL Intake Plenum
Design:

Fittings are made from billet 6061-T6 aluminum and finished in Type II black anodizing
Pre-anodized machined Turner branding
Nylon fiber braided lines
Fittings are a direct replacement for the plastic OEM fittings
Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.

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F9x S63 Gloss Carbon Fiber ECU Cover
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:13792999
Part#: F90ECUCOVER
Ships on Dec 21, 2026
$ 361.99 USD
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The cover is made from hand-laid carbon fiber material with pre-impregnated carbon fiber cloth and epoxy resin and finished in a beautiful gloss clear coat for UV-protection and extra durability. Be sure to check out our other incredible carbon fiber pieces we offer to enhance your F90 M5 and M8!
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S63 Gloss Carbon Fiber Engine Cover - F90 M5
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:12151726
Part#: 001646TMS01
Ships on Dec 21, 2026
Sale - Save 3% $ 668.99

This product was last offered at the strikethrough price on
06-14-2026

$ 648.92 USD
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Sale - Save 3%
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This product was last offered at the strikethrough price on
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$ 648.92 USD
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At Turner we love the S63 and we love carbon fiber. The answer was clear we need to combine the two and the result is amazing. Our carbon engine cover looks so good on the S63 and can transform the appearance of your engine bay in just minutes. One of the first things you do with a new car is take care of all the simple modifications to get the best out car without taking it apart. Simply remove your factory engine cover and transfer the factory "M" badge and grommets on to your new carbon fiber engine cover and check one modification off the list!

Our Turner S63 Carbon Engine cover starts with mold of the original engine cover to get the best factory-form fitment possible. The cover is made from hand-laid carbon fiber material with pre-impregnated carbon fiber cloth and epoxy resin and finished in a beautiful gloss clear coat for UV-protection and extra durability. Be sure to check out our other incredible carbon fiber pieces we offers to enhance your F90 M5.

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Turner Motorsport - Corporate Logo
T#:394058
Part#: 002445C01A-01KT
Ships on Dec 30, 2026
Sale - Save 10% $ 126.99

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

$ 114.29 USD
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$ 126.99

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$ 114.29 USD
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Turner Motorsport - Corporate Logo
T#:112
Part#: TDR9980001
Ships on Jan 13, 2027
Sale - Save 20% $ 241.99

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$ 193.59 USD
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Made in the USA If allowed in the rules these solid aluminum engine and transmission mounts offer many advantages over a urethane or Delrin mounts. It's no wonder that these mounts have found their way into the top BMW racers in the country. We originally developed these mounts for E36 and E46 World Challenge racing but they also work perfect in BMW Modified and SCCA club racing and SpecE46 (SE46). These are machined from solid aluminum and have zero deflection. The engine torque will cause a rubber or urethane mount to flex or deflect. The stiffer the material the less movement there is and the more torque is passed through the driveline (instead of being wasted winding up the mount). At the transmission end the flex-free solid mounts will give smoother, crisper shifts since the transmission is no longer dancing on the pliable mount. This puts the shift linkages in better consistent alignment. And unlike rubber or urethane the aluminum has zero wear and is not affected by leaking oil or other fluids so this is likely the last set of motor and transmission mounts you will ever need. We have designed these mounts so the engine is 5mm lower and the transmission is 1mm lower than the factory mounts. This helps lower the center of gravity for better balance and handling. We very strongly recommend using the transmission and engine mounts together as a complete kit. Mixing a rubber mount with a metal mount will cause undue stress on the mouting points and will lead to a failure. We never advise using a solid mount unless a corresponding solid mount is also used. This kit fits the E36, E46, Z3, and Z4 6 cylinder models listed below, including M3 models.

These are a no-compromise design for all-out racing use. Full solid aluminum mounts should not be used on street-driven cars. Because there is no material to absorb vibration these will be quite harsh for regular street use (track cars don't care about noise).

Subframe reinforcement kits are very strongly recommended to go along with these solid motor mounts to reduce the risk of damage to the subframe. The motor mount section of the subframe should be reinforced to prevent stress and failure of the subframe.

This item fits the following BMWs:
1992-1999 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2006 E46 BMW 323i 323ci 325i 325ci 328i 328ci 330i 330ci M3
2001-2006 SpecE46 BMW 330i 330ci
1997-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe
2003-2005 E85 BMW Z4 2.5i Z4 3.0i
2006-2008 E85 BMW Z4 M Roadster M Coupe
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B58 Ignition Coil Conversion Kit - M50 M52 S50 S52
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:46959265
Part#: 044966LA
In Stock
Starting at $ 347.99 USD
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Starting at $ 347.99 USD
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By the early 1990s, BMW had phased out its canister-style ignition coil in favor of an individual coil-on-plug system. The venerable M50 was one of the first engines to receive this update, which boasts greater overall efficiency through increased ignition control and spark energy. Unfortunately, over two decades later, the ignition coils used on the M50, M52, S50, and S52 engines are antiquated at best. Our team of engineers and BMW enthusiasts realized the need for an ignition system upgrade and set out to modernize the M5X ignition system with performance ignition coils pulled from the B58 parts bin.

WHY UPGRADE?

B58 ignition coils provide up to 2.5 times more spark energy than OE M5X ignition coils, effectively eliminating misfires even on high-performance setups. Whether your vehicle is heavily modified or completely stock, these ignition coils deliver unparalleled performance with zero downsides! For tuners, the Turner Motorsport kit also allows for precise adjustments to ignition dwell time through standalone engine management, giving you complete control over your engine’s performance.

Our kit utilizes the factory mounting locations and includes a proprietary boot design with a built-in 1k OHM resistor. Unlike many aftermarket options, our design prevents electrical contact springs from burning out, ensuring long-term reliability and durability. The included ignition coil bracket and cover plate are manufactured from durable 5052 aluminum, combining rugged durability with a premium aesthetic. Designed and optimized in-house using cutting-edge 3D scanning hardware and CAD software, our kit ensures a perfect fit and a clean, factory-like appearance. Installation is a breeze with the included adapter harness, allowing you to add modern ignition coils to your M5X with ease!

Eliminate misfires and unleash the full potential of your M5X-equipped BMW with our industry-leading B58 ignition coil upgrade. Designed for easy installation and unparalleled reliability, it’s the ultimate plug-and-play solution for performance enthusiasts.

FEATURES:

B58 ignition coils offer upwards of 2.5x more spark energy than the OE M5X ignition coils Eliminates common ignition system defects - no more chasing misfires or swapping around coil packs! The included brackets, cover plates, wiring harness adapters, and proprietary boots make for an easy installation Confirmed functionality with factory M3.3.1 (OBDI) and MS41 (OBDII) DME software PART DESIGN:

Bolt-on ignition coil brackets are manufactured from 5052 aluminum and feature a black anodized coating for superior durability, ensuring a lasting finish 5052 brushed aluminum cover plates ensure a cohesive, OEM+ aesthetic Utilizes factory ignition coil mounting locations and corresponding hardware for easy installation Our proprietary rubber boot design incorporates the factory B58 1K OHM resistor, preventing the electrical contact failure commonly associated with other aftermarket kits Coil adapter harnesses feature durable Weatherpack connectors, safeguarding each wire from exposure to water Compact design allows for retaining the factory beauty cover and/or clearance with aftermarket top-mount turbocharger kits KIT CONTENTS:

Turner Motorsport B Series Ignition Coils for M50, M52, S50, and S52 (6) Turner Motorsport B58 Ignition Coil Conversion Wiring Harnesses (6) Turner Motorsport B58 Ignition Coil Conversion Brackets & Cover Plates (6) Optional Selections: Spark Plugs: NGK BKR6EQUP (OEM), Bosch FGR7DQP (OEM), BMW 12120037607 (Genuine) Spark Plug Socket: Schwaben Extended 5/8" (16mm) Magnetic Spark Plug Socket, Bavarian Autosport 12" x 5/8" Spark Plug Socket INSTALLATION & SUPPORT:

Need installation tips? Our R&D team has assembled a full, start-to-finish installation tutorial, including detailed removal instructions and high-definition images! See the Installation PDF under the "INSTALLATION" tab for more information.

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Turner Motorsport - Corporate Logo
T#:55497480
Part#: 060119LA01KT
In Stock
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$ 73.99 USD
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$ 73.99 USD
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If you own an M57-equipped BMW, you already know this twin-turbo diesel powerplant is an absolute torque monster. What you might also know is that all that low-end grunt and high-compression diesel vibration wreaks absolute havoc on your accessory drive system.

From the factory, both the E90 335d and E70 X5 35d utilize a rigid alternator pulley. With each cylinder's fire, the crankshaft experiences a violent micro-acceleration. Because the alternator has a heavy internal rotor spinning at high speeds, it wants to keep spinning at a constant rate. When the engine suddenly slows down (even minutely between firing cycles), the alternator fights the belt. This constant tug-of-war results in extreme stress on your engine's belt-driven components. At best, it’s an annoying, unrefined chirp at idle; at worst, it’s a ticking time bomb for your expensive harmonic balancer.

To solve this issue, many enthusiasts choose to run a clutched alternator pulley (also called an overrunning alternator pulley). A clutched pulley allows the alternator to "freewheel" or coast when the engine slows down, completely isolating its rotational inertia from the belt drive to prevent component wear. While the N52's clutched pulley (12317560483) is a straight bolt-on, the offset is incorrect for the E90 335d's accessory drive. Thankfully, our engineers designed this zinc-coated spacer to provide the precise amount of spacing needed to perfectly align the new pulley with existing belt drive components.

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BMW E46 M3 Race Alternator Pulley Turner Motorsport
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:389737
Part#: TEN4622RM3KT
Ships in 1 Business Day
Sale - Save 5% $ 206.99

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

$ 196.64 USD
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$ 196.64 USD
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BMW E46 M3 Race Alternator Pulley Turner Motorsport

Enhance the performance of your BMW E46 M3 with the BMW E46 M3 Race Alternator Pulley from Turner Motorsport. Engineered for racing enthusiasts, this alternator pulley reduces rotational mass for improved engine response and horsepower gains. Crafted from high-quality materials, it ensures durability and reliability on the track. Upgrade your BMW E46 M3's performance with this premium race alternator pulley.

  • Reduces rotational mass for improved engine response
  • Increases horsepower gains
  • High-quality materials ensure durability and reliability
  • Designed for racing enthusiasts
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WPC Treated Cam Bearing Ledge - Intake
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:13299338
Part#: 11127550913WPC2
In Stock
Sale - Save 10% $ 916.99

This product was last offered at the strikethrough price on
06-14-2026

$ 825.29 USD
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Sale - Save 10%
$ 916.99

This product was last offered at the strikethrough price on
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$ 825.29 USD
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Turner Motorsport - Corporate Logo
T#:2889
Part#: 11617533400-E60
Ships in 4 Business Days
$ 454.99

This product was last offered at the strikethrough price on
08-13-2026

$ 414.99 USD
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This Crankcase Vent / Oil Separator Repair Kit includes the updated oil separator valve, oil dipstick guide tube and hoses. The kit includes:
1 x 11617533400 - Oil Separator Valve
1 x 11437565440 - Dip Stick Guide Tube
1 x 11617533398 - Hose from Valve to Valve Cover
1 x 11617533399 - Hose from Valve to Intake Manifold
1 x 11157532629 - Hose from Vent Valve to Dipstick1 x 11431740045 - O-ring for Dip Stick Guide Tube


This item fits the following BMWs:
2004-2005 E60 BMW 525i 530i
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Turner Motorsport - Corporate Logo
T#:2898
Part#: 11617533400-E83
Ships in 4 Business Days
$ 400.21

This product was last offered at the strikethrough price on
08-13-2026

$ 359.76 USD
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$ 359.76 USD
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This Crankcase Vent / Oil Separator Repair Kit includes the updated oil separator valve, oil dipstick guide tube and hoses. Suitable for cold weather applications. This kit fits E83 X3 2.5i X3 3.0i 2004-2006.

This item fits the following BMWs:
2004-2006 E83 BMW X3 2.5i X3 3.0i
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Turner Motorsport - Corporate Logo
T#:55317643
Part#: 059043LA03
Ships in 4 Business Days
New Item
$ 4.99 USD
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This M7/6x29.5 threaded stud is used for securing the valve cover to the cylinder head on all M50, M50TU, M52, M52TU, M54, S50 (US), and S52 engines. Despite this crucial role in engine sealing and construction, BMW decided to discontinue this vital factory part in 2023. Recognizing the gap left by the discontinued factory hardware, our team of BMW enthusiasts reverse-engineered the original part—improving its materials and finish to bring a higher-quality, long-lasting solution to the market. Manufactured from high-strength Grade 8.8 steel and finished with a protective zinc coating, this upgraded stud delivers exceptional durability, reliable torque retention, and exceptional corrosion resistance under the hood.
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Turner Motorsport - Corporate Logo
T#:2895
Part#: 11617533400-E85
Ships in 4 Business Days
Sale - Save 5% $ 406.99

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

$ 386.64 USD
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Sale - Save 5%
$ 406.99

This product was last offered at the strikethrough price on
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$ 386.64 USD
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This Crankcase Vent / Oil Separator Repair Kit includes the updated oil separator valve, oil dipstick guide tube and hoses. This kit fits E85 Z4 2.5i Z4 3.0i 2003-2005.

This item fits the following BMWs:
2003-2006 E85 BMW Z4 2.5i Z4 3.0i
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Turner Motorsport - Corporate Logo
T#:54852009
Part#: 059043LA04KT
Ships in 4 Business Days
New Item
$ 4.99 USD
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$ 4.99 USD
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Over time, the factory valve cover hardware on M50, M50TU, M52, M52TU, M54, S50 (US), and S52 engines is subjected to continuous heat cycling, oil vapor, and moisture, causing original cap nuts to oxidize, corrode, or thread-strip during routine maintenance. Our Polished Valve Cover Cap Nut serves as a direct replacement designed to address these common failure points while improving upon overall engine bay aesthetics.

Because maintaining precise gasket compression is critical to preventing oil leaks, these cap nuts and washers are machined directly to OE-style dimensions. This exact fitment allows for direct compatibility with original and replacement valve cover studs (see T#55317643) and ensures the hardware can be torqued precisely to OEM specifications without guesswork. Manufactured to grade 8.8 structural strength standards, the hardware maintains the necessary clamp force required under normal and high-performance engine operating conditions.

To resist corrosion, both the cap nut and washer undergo an electroless nickel plating process during production. Unlike standard zinc coatings that dull or rust over time, electroless nickel provides a uniform layer of corrosion resistance that withstands long-term chemical exposure and extreme temperature swings while giving the hardware a polished, high-end appearance. Each cap nut assembly includes an OE rubber washer seal, ensuring a tight, leak-free barrier that prevents oil from escaping through the mounting studs.

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Turner Motorsport - Corporate Logo
T#:55497479
Part#: 060119LA02
In Stock
New Item
$ 9.99 USD
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$ 9.99 USD
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If you own an M57-equipped BMW, you already know this twin-turbo diesel powerplant is an absolute torque monster. What you might also know is that all that low-end grunt and high-compression diesel vibration wreaks absolute havoc on your accessory drive system.

From the factory, both the E90 335d and E70 X5 35d utilize a rigid alternator pulley. With each cylinder's fire, the crankshaft experiences a violent micro-acceleration. Because the alternator has a heavy internal rotor spinning at high speeds, it wants to keep spinning at a constant rate. When the engine suddenly slows down (even minutely between firing cycles), the alternator fights the belt. This constant tug-of-war results in extreme stress on your engine's belt-driven components. At best, it’s an annoying, unrefined chirp at idle; at worst, it’s a ticking time bomb for your expensive harmonic balancer.

To solve this issue, many enthusiasts choose to run a clutched alternator pulley (also called an overrunning alternator pulley). A clutched pulley allows the alternator to "freewheel" or coast when the engine slows down, completely isolating its rotational inertia from the belt drive to prevent component wear. While the N52's clutched pulley (12317560483) is a straight bolt-on, the offset is incorrect for the E70 X5 35d's accessory drive. Thankfully, our engineers designed this zinc-coated spacer to provide the precise amount of spacing needed to perfectly align the new pulley with existing belt drive components.

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Turner Motorsport - Corporate Logo
T#:56507850
Part#: 060205LA01KT
In Stock
New Item
$ 398.60 USD
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$ 398.60 USD
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The MINI N14 engine uses a traditional pencil coil design that operates using conservative dwell times and relatively low discharge energy. On stock vehicles, this system is sufficient. However, as cylinder pressures increase via higher boost, upgraded turbos, or ethanol-blended fuels, the strength required to bridge the spark gap increases substantially.

Under these conditions, standard N14 coils reach their electrical limits, resulting in high-RPM spark blowout, misfires, or reduced flame front propagation. To solve this issue, our team engineered the B-Series Coil Conversion Kit, which adapts modern BMW B48/B58 ignition technology to the N14 using proprietary brackets, standoffs, and wiring harness adapters. Our performance B48 ignition coils feature a significantly lower primary resistance and an optimized secondary winding structure, allowing them to store and release up to 2.3x more spark energy than the factory N14 ignition coil.

This clean, coil-on-plug upgrade drops directly into your valve cover without bulky external boxes or messy wiring. Whether you need an ignition service or are building a tuned N14, upgrade to B-Series ignition coils and experience improved spark energy and long-lasting performance.

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Turner Motorsport - Corporate Logo
T#:55497466
Part#: 060119LA01
In Stock
New Item
$ 9.99 USD
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$ 9.99 USD
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If you own an M57-equipped BMW, you already know this twin-turbo diesel powerplant is an absolute torque monster. What you might also know is that all that low-end grunt and high-compression diesel vibration wreaks absolute havoc on your accessory drive system.

From the factory, both the E90 335d and E70 X5 35d utilize a rigid alternator pulley. With each cylinder's fire, the crankshaft experiences a violent micro-acceleration. Because the alternator has a heavy internal rotor spinning at high speeds, it wants to keep spinning at a constant rate. When the engine suddenly slows down (even minutely between firing cycles), the alternator fights the belt. This constant tug-of-war results in extreme stress on your engine's belt-driven components. At best, it’s an annoying, unrefined chirp at idle; at worst, it’s a ticking time bomb for your expensive harmonic balancer.

To solve this issue, many enthusiasts choose to run a clutched alternator pulley (also called an overrunning alternator pulley). A clutched pulley allows the alternator to "freewheel" or coast when the engine slows down, completely isolating its rotational inertia from the belt drive to prevent component wear. While the N52's clutched pulley (12317560483) is a straight bolt-on, the offset is incorrect for the E90 335d's accessory drive. Thankfully, our engineers designed this zinc-coated spacer to provide the precise amount of spacing needed to perfectly align the new pulley with existing belt drive components.

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BMW E46 Turner Motorsport Power Pulley Kit
10X Entries Into Our F80 M3 Sweepstakes
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
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Sale - Save 20%
$ 382.99

This product was last offered at the strikethrough price on
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$ 306.39 USD
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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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