BMW Engine Parts for BMW 3 Series E46 (1999-2005)

Clear BMW chassis

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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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NOCO - Corporate Logo
T#:855029
Part#: GEN5X3
Ships in 8 Business Days
20% off MSRP $ 249.95

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

$ 199.94 USD
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20% off MSRP
$ 249.95

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

$ 199.94 USD
Free Shipping

The GEN5X3 is an upgraded version of NOCO's GENM3 with improved features. This model is 37% smaller yet delivers 43% more power, making it one of the most high-performing onboard marine battery chargers NOCO has ever produced. It's a three-bank onboard battery charger with a 15-amp rating (5 amps per bank) designed for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries. You can independently charge and control each battery bank using selectable charging modes such as 12V, 12V AGM, 12V Lithium, and 12V Repair Mode, suitable for all types of lead-acid and lithium-ion batteries.


Features: 

  • A three-bank on-board battery charger rated at 15-amps for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries.
  • Independently charge and control each battery bank with selectable charging modes - including 12V, 12V AGM, 12V Lithium, and 12V Repair Mode - for all types of lead-acid and lithium-ion batteries.
  • An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
  • Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
  • Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
  • It's not just a trickle charger; it's an advanced battery maintainer. A fully automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge.
  • A simplified mounting system allows for quick and easy installations in any direction - even up-side-down - with an integrated anti-vibration backing to isolate shock, vibration, and noise.
  • A fully-sealed and waterproof onboard battery charger with an ingress protection rating of IP68, but has survived brutal life cycle testing, including thousands of hours underwater.


WARNING: This product contains chemicals known to the state of California to cause cancer, birth defects, and/or reproductive harm. See above warning label as well as http://www.p65warnings.ca.gov for further information on Proposition 65 warnings.

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NOCO - Corporate Logo
T#:855031
Part#: GENPRO10X2
Ships in 8 Business Days
21% off MSRP $ 284.99

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

$ 224.99 USD
Free Shipping on orders $49 and up
21% off MSRP
$ 284.99

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

$ 224.99 USD
Free Shipping on orders $49 and up

The GENPRO10X2 is an upgraded version of our GEN2 with enhanced features. This model is 19% smaller yet delivers 33% more power, making it one of the most high-performing onboard marine battery chargers NOCO has ever produced. It's a two-bank onboard battery charger with a 20-amp rating (10 amps per bank) designed for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries. You can independently charge and control each battery bank using selectable charging modes such as 12V, 12V AGM, 12V Lithium, and 12V Repair Mode, suitable for all types of lead-acid and lithium-ion batteries.


Features: 

  • A two-bank on-board battery charger rated at 20-amps for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries.
  • Independently charge and control each battery bank with selectable charging modes - including 12V, 12V AGM, 12V Lithium, and 12V Repair Mode - for all types of lead-acid batteries.
  • An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
  • Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
  • Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
  • It's not just a trickle charger; it's an advanced battery maintainer. A fully automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge.
  • A simplified mounting system allows for quick and easy installations in any direction - even up-side-down - with an integrated anti-vibration backing to isolate shock, vibration, and noise.
  • A fully-sealed and waterproof onboard battery charger with an ingress protection rating of IP68, but has survived brutal life cycle testing, including thousands of hours underwater.


WARNING: This product contains chemicals known to the state of California to cause cancer, birth defects, and/or reproductive harm. See above warning label as well as http://www.p65warnings.ca.gov for further information on Proposition 65 warnings.

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Knock Sensor
We Price Match - Give Us A Call or Chat!
Meyle - Corporate Logo
T#:35964551
Part#: 13627568422
Back Ordered
$ 75.99 USD
Free Shipping on orders $49 and up
This sensor detects engine knocking or pinging and adjusts the timing to ensure optimal engine performance and efficiency.

Precision Raceworks - Corporate Logo
T#:38094344
Part#: 201-0177
Ships in 9 Business Days
$ 29.99 USD
Free Shipping on orders $49 and up
Perfect for upgrading or modifying your fuel delivery system, it offers effortless installation and long-lasting reliability in performance-driven builds

Rogue Engineering - Corporate Logo
T#:553959
Part#: PP.S54.RACE
Ships in 9 Business Days
$ 599.00 USD
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$ 599.00 USD
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Rogue Engineering has developed a power pulley kit that reduces the drag on specific pulleys while allowing others to remain at their same efficiency. This allows for perfect operation in daily driven vehicles without a hiccup or stutter. However, when the demand for power is requested, the power pulley kit allows for the freed power to become apparent.  The term "power" pulley is a bit of a misnomer. Underdrive pulleys actually free up power by reducing the drag caused by the accessories.  These pulleys are based off a calculated percentage from factory dimensions, so that particular component speeds are safely reduced without affecting their true purpose.

Rogue Engineering Power Pullies are CNC machined from 6061-T6, heat treated aluminum and specially coated with a MIL-A-8625 Type III hard coat anodize finish. This kind of anodizing is not to be confused with a Type II cosmetic anodize finish (typical colors such as red, blue, silver, green, etc.). The hard coat anodize finish actually builds a small surface layer on top of the aluminum, preventing wear.

This part fits the following BMW engines:
S54

This part fits the following chassis:
E46, Z3, Z4

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Genuine BMW - Corporate Logo
T#:13090
Part#: 12417832149
Special Order: No Guaranteed ETA
2% off MSRP $ 168.99

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

$ 165.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 168.99

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

$ 165.99 USD
Free Shipping on orders $49 and up

We recommend replacing this starter solenoid when installing a new starter, as a failed solenoid switch can cause even a new starter to go bad quickly.


Genuine BMW Solenoid Switch
This item fits the following BMW Chassis:
E46 M3,E46

Fits BMW Engines including:
S54
 

 

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TurboSmart - Corporate Logo
T#:4921469
Part#: TS-0551-1012
Ships on Aug 20, 2026
10% off MSRP $ 430.99

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

$ 387.99 USD
Free Shipping
10% off MSRP
$ 430.99

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

$ 387.99 USD
Free Shipping
The Turbosmart GenV range is the Highest Flowing Wastegate range in the World. The GenV WG38 UltraGate38 External Wastegate is a Motorsport proven, cost-effective external wastegate. The GenV provides extensive user configuration, world-leading extended thermal performance, fatigue resistance, and best-in-class flow performance for optimum control and longevity. The GenV External Wastegate from Turbosmart was a ground-up rework of a classic and the only feature that rolled over from the Gen4 range was the mounting orientation. CFD optimized and validated in-house for maximum flow and thermal management, the GenV range has more features, options and performance than any other gate like it. A direct fit upgrade to all Gen4 Turbosmart wastegates and feature our unique collar-locking system, variable actuator cap, and base for easy, 360-degree optional routing of reference hoses, optional liquid-cooling provision, 1/8″ NPT reference ports and are provided with the full range of available springs.
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VAC Harmonic SuperDamper By ATI - M50/S50/M52/S52
For use only with OBD1 engine management systems.
ATI Performance Products - Corporate Logo
T#:639877
Part#: VAC-HPCD-M50-TR
Ships on Aug 20, 2026
$ 1,139.99 USD
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$ 1,139.99 USD
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If you are breaking crankshafts and oil pumps, the cause may be a mystery to you as it has been to many of our customers. We know that controlling the harmonic resonance of the BMW 6 is highly important as RPMs rise, but the ideal configuration of the inline-6 motor makes even experienced engine builders overlook some fundamental principals of engine harmonics that can be destructive. ATI Performance Products has partnered with VAC Motorsports to develop new dampers for BMW 2.5L, 2.8L, 3.0L and 3.2L straight-6 engines found in the E36 and E46 M3 as well as newer Z3s and Z4s. These dampers eliminate crankshaft harmonic vibration, which allows the engine to produce more horsepower and torque, while also reducing internal engine wear at the same time. Broken oil pumps and timing chains will be a thing of the past! When used with a VAC accessory pulley, these dampers are a direct replacement over the OEM balancer. They have a 7” outer diameter and include OEM style timing alignment tabs. BMW enthusiasts should know that all ATI Super Dampers exceed SFI 18.1 Safety Certification and are approved for competition. The advantages of the ATI SuperDamper include eliminating vibration issues with inline 6 engines equipped with lightweight clutch and flywheel assemblies, reduced bearing, engine accessories, oil pump wear, and compatibility with underdrive pulleys. Kit includes: Damper Lightweight VAC Billet Crankshaft Pulley Mounting and Installation Hardware Trigger Ring for OBD1 systems Note: Will NOT work with S50B30 & S50B32 Euro Engines, For Street/Track cars with Air Conditioning, the Additional A/C Pulley Option is REQUIRED as the OE A/C pulley is not compatible. The additional mounting and installation hardware is also included. Made in the USA
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Rein Exhaust Valve - E34, E36, E39, E46, Z3
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:379738
Part#: 11341739823
Ships on Aug 20, 2026
$ 20.99 USD
Free Shipping on orders $49 and up
Replacement exhaust valve

K&P Engineering - Corporate Logo
T#:402537
Part#: S37
Ships on Aug 20, 2026
$ 119.00 USD
Free Shipping
$ 119.00 USD
Free Shipping

Stainless steel filtration is not a new technology but is quickly gaining popularity in the automotive segment. With the ability to filter down as small as a paper filter element with the ability to be washed and reused!

The K&P Engineering filter element is made from medical grade, type 304 stainless steel micronic filter cloth to provide unmatched protection against oil contamination and resultant engine damage. A one inch square of this material flows an incredible 1.9 gallons of oil per minute at only 1 PSI pump pressure. The adhesive used in the filter assembly process is good to 600 degrees Fahrenheit, far above normal engine operating temperatures. A super strength nickel-plated neodymium rare earth magnet is installed in the top of the element for magnetic pre-filtering of the oil. The sophisticated bypass is engineered for proper differential pressures and consistent operation, delivering a greater percentage of filtered oil while being very easy to clean. The twist lock design assures positive filter element placement and allows for easy disassembly, inspection, and cleaning. The quad-ring gasket doubles the seal between the filter and the engine. Finally, the filter housing is carved out of solid 6061T6 billet aluminum, which not only looks trick but aids in dissipating heat.

K&P Engineering manufactures stainless steel filters for a vast array of engines around the world. Staying at the forefront of design and testing allows this company to offer a top-tier product for your European vehicle.

Features:

  • Consistent filtering across entire filter surface
  • Superior ASTMF316 filtration performance
  • Magnetic Prefiltering
  • Progressive rate bypass combined with high flow characteristics of the filter media avoids unfiltered oil bypassing the filter during cold startup and high rpm
  • Easy inspection of engine contamination
  • Proven in Motorsports, Military and Aerospace applications for years. Technology is FAA approved for use in aircraft. 

At regular oil changes, clean to K&P's specifications for continued used - a true lifetime filter.

This part fits the following BMWs:
1991 - 1999 E36 Coupe 323i 325is 328i
1993 - 1999 E36 Convertible 323i 325i 328i
1990 - 1999 E36 Sedan 325i 328i 
1989 - 1995 E34 525i, 530i, 
1998 - 2004 E39 Touring 525i 528i 
1996 - 2004 E39 Sedan 525i 528i 530i 
1999 - 2001 E46 Convertible 323ci 325ci 330ci
2002-2006 E46 Convertible 325ci 330ci
1998 - 2001 E46 323ci 325ci 330ci M3
2002 - 2006 E46 325ci 330ci
1998 - 2001 E46 Touring 323i 325i
2002 - 2006 E46 Touring 325i 325xi
1998 - 2001 E46 Sedan 323i 325i 328i 330i
2002 - 2006 E46 Sedan 325i 325xi 330i 330xi
2000 - 2006 E53 X5 SUV X5 X5 3.0i 

 

 

 

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CTA Tools - Corporate Logo
T#:586216
Part#: CTA2885
Ships on Aug 20, 2026
$ 121.87 USD
Free Shipping
$ 121.87 USD
Free Shipping
This is the proper tool for locking the camshafts in place at TDC when servicing the timing system.
Victor Reinz - Corporate Logo
T#:372457
Part#: 11142249533
Ships on Aug 20, 2026
$ 46.99 USD
Free Shipping on orders $49 and up
Replace when doing a clutch job.


CTA Tools - Corporate Logo
T#:1241318
Part#: CTA2030
Ships on Aug 20, 2026
$ 81.95 USD
Free Shipping
$ 81.95 USD
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Get the complete set and be ready.
VAC Motorsports - Corporate Logo
T#:11857228
Part#: JE-FPS-M52-84-10
Ships on Aug 20, 2026
$ 1,439.99 USD
Free Shipping on orders $49 and up

Boost Your BMW's Engine with JE Pistons

Upgrade your BMW's engine with the JE Pistons Forged Piston Set designed for the M52 engine. These high-quality forged pistons feature a diameter of 84mm and a compression ratio of 10.5:1, ensuring improved performance and reliability for your BMW.

  • Enhances engine performance and reliability
  • Precision-engineered for optimal fit and function
  • High-quality forged construction ensures durability
  • Designed specifically for the M52 engine
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VAC Motorsports - Corporate Logo
T#:18070230
Part#: VAC-VEK-S54
Ships on Aug 20, 2026
$ 529.99 USD
Free Shipping on orders $49 and up

BMW S54 3.2L VANOS Elimination Kit - Full Kit | VAC Motorsports is designed to replace the original VANOS unit on the S54 engine, offering a comprehensive solution for performance enthusiasts and racers. Engineered and tested by VAC Motorsports, this kit allows for precise camshaft timing adjustments and is ideal for those using standalone ECUs that do not control the dual-VANOS system.

  • Enhanced Performance: Allows for full adjustment of camshaft timing, enabling optimization of camshafts for maximum performance.
  • Engineered for Racing: Ideal for racing applications and standalone ECU setups that do not manage the dual-VANOS unit.
  • High-Quality Components: Includes a billet 6061-T6 anodized black VANOS elimination plate and adjustable camshaft hubs made from durable 4140 alloy steel.
  • Complete Kit: Comes with a block-off plug, using OE O-rings to replace the original oil supply valve, and all necessary hardware for installation.
  • Versatile Fit: Compatible with all S54 engines and those swapped into other chassis.

Kit Includes:

  • Billet 6061-T6 Anodized Black VANOS Elimination Plate
  • (2) Adjustable Camshaft Hubs made from 4140 Alloy Steel
  • Block OFF Plug – Uses OE O-Rings and replaces OE Oil Supply Valve
  • All Required Hardware
  • Installation Instructions

NOTE: ONLY COMPATIBLE WITH AFTERMARKET ECUs

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Rally Road - Corporate Logo
T#:401511
Part#: RROCCK
Ships on Aug 20, 2026
Starting at $ 243.99 USD
Free Shipping
Starting at $ 243.99 USD
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Rally Road Productions, Inc. is a team supported by a group of people with great abilities in their area of expertise. From the "web guy" and driving instructor friends, to owners of various machine shops, they have surrounded ourselves with people that can be trusted to create and manufacture quality products. This is the key to ensuring everything that they sell will perform as it was intended. The goal is to increase customer satisfaction and make the customization or performance enhancement of your vehicle a more enjoyable venture.

This oil cooler system is race tested and proven to outflow the euro M3 oil filter housing. Additionally, this particular system uses a sealing mechanism to direct the oil flow through the cooler lines and then through the oil filter.  Other cooler caps do not provide this seal and therefore the external oil coolers and lines act as a "balloon".  The lines and cooler are pressurized, but oil does not flow through them.  Flowing oil means it is being cooled and not just acting as an external reservoir.

Flow testing reveals that the oil cooler cap will outflow the Euro M3 Oil Filter Housing by more than 80% at the same, pressure, RPM, and oil temperature. In the upper RPM range, there is nearly a 100% improvement in flow from the RallyRoad oil cooler cap when compared to the Euro M3 oil filter housing.  This is a massive improvement over OE and is a worthwhile upgrade, especially in engines that see severe duty.

Features:

  • -8AN o-ring ports to provide a leak free fitting without the use of Teflon tape or sealant used by other oil cooler caps.
  • Viton o-rings are used throughout to maintain function and sealing in a high-temperature oil environment.
  • Use of the stock filter cap bolt to reduce cost and simplify installation.
  • An internal sealing mechanism to direct oil flow through the oil cooler and through the filter.
  • 1/8" NPT side port for external oil pressure gauge.

Kit Includes:

  • Oil filter cap with fittings
  • Oil filter sealing ring
  • BMW MANN Oil Filter and gasket

This part fits the following BMWs
1992-1999 E36 323i 325i 325is 328i 328is

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Packaged by Turner - Corporate Logo
T#:23482922
Part#: 4PK863ATKT
Ships on Aug 24, 2026
Sale - Save 3% $ 254.99

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

$ 246.93 USD
Free Shipping on orders $49 and up
Sale - Save 3%
$ 254.99

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

$ 246.93 USD
Free Shipping on orders $49 and up
Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belts, tensioner assemblies, and new tensioner pulleys. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!
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Genuine BMW - Corporate Logo
T#:39266
Part#: 12421436547
Ships in 8 Business Days
2% off MSRP $ 50.99

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

$ 49.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 50.99

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

$ 49.99 USD
Free Shipping on orders $49 and up


Genuine BMW Cable Alternator-Starter -
This item fits the following BMW Chassis:
E46

Fits BMW Engines including:
M52

Genuine BMW - Corporate Logo
T#:19400
Part#: 13531707404
Special Order: No Guaranteed ETA
2% off MSRP $ 165.99

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

$ 161.99 USD
Free Shipping
2% off MSRP
$ 165.99

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

$ 161.99 USD
Free Shipping


Genuine BMW Cover -
This item fits the following BMW Chassis:
E46,E83 X3

Fits BMW Engines including:
M52,M54


Genuine BMW - Corporate Logo
T#:11460
Part#: 83300490822
Special Order: No Guaranteed ETA
$ 123.99 USD
Free Shipping on orders $49 and up
GENUINE BMW BRACKET 83300490822

Precision Raceworks - Corporate Logo
T#:38161737
Part#: 201-0406
Ships on Aug 24, 2026
$ 24.99 USD
Free Shipping on orders $49 and up
This fitting allows you to install a 1/8" npt port anywhere you have an existing quick connect Compatible with the Motiv 0-10 Bar pressure sensor
Rally Road - Corporate Logo
T#:13694124
Part#: BMWE46FPIS
Ships on Aug 25, 2026
$ 45.99 USD
Free Shipping on orders $49 and up
Simplifies Fuel pump installation.
Genuine BMW - Corporate Logo
T#:388118
Part#: 11217832125
Special Order: No Guaranteed ETA
2% off MSRP $ 3,064.99

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

$ 3,003.99 USD
2% off MSRP
$ 3,064.99

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

$ 3,003.99 USD


AMC - Corporate Logo
T#:19277
Part#: 11127514540
Ships on Aug 27, 2026
$ 1,869.02 USD
$ 1,869.02 USD


CYLINDER HEAD WITH BEARING L 11127514540 Manufactured by AMC New

AMC - Corporate Logo
T#:383390
Part#: 11127514540-3
Ships on Aug 27, 2026
$ 1,562.99 USD
$ 1,562.99 USD
Complete cylinder head with guides, seats, valves, springs, and all neccesary hardware for installation
OEM Bosch Alternator - 120 Amp - E46, E39, Z3
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:359520
Part#: AL0738XKITKT
Ships on Aug 28, 2026
$ 307.00 USD
Free Shipping
$ 307.00 USD
Free Shipping

If your car has died on the side of the road from a dead battery and you notice flickering or low powered head lights, it's likely your alternator failing. To be sure you are getting a high quality part with a long life-span, choose this OEM Bosch Alternator. This is an OEM replacement for BMW part # 12311432980 and 12317501690.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!


A refundable core charge must be applied to this alternator. Upon receipt of your rebuildable alternator core, you will be refunded the core charge. 

This Bosch Alternator fits the following BMWs:
1997-2000 E39 5 Series 528i
2000 E46 3 Series 323i 323ci 328i 328ci
1997-2000 Z3 Roadster Z3 2.3 Z3 2.8

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OEM Bosch Oxygen Sensor Probe -- E46 M56
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat! For M56 Sulev Engines
Bosch - Corporate Logo
T#:37669
Part#: 11787515826
Special Order: No Guaranteed ETA
$ 177.99 USD
Free Shipping
$ 177.99 USD
Free Shipping

A new oxygen sensor can improve driveability and lengthen engine life. Ultimately, you achieve a smoother running engine that is more fuel efficient. Feedback from the oxygen sensor provides closed-loop control of the injected quantity of fuel for optimum air-fuel mixture, enabling virtually complete combustion to take place. Contaminants in gas and certain atmospheric conditions can drastically shorten the life of any oxygen sensor, therefore they should be checked with every periodic maintenance and changed if necessary.

This is the OEM Bosch oxygen sensor for 325i and 325Ci E46 BMW's. This sensor is mounted in the manifold before the catalytic converter. OEM replacement for BMW # 11787515826.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

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Bosch Starter Motor for E36 E46 Z3 6 Cylinder (SR0448X)
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:338004
Part#: 12411712937
Ships on Aug 28, 2026
$ 283.99

This product was last offered at the strikethrough price on
05-07-2026

Starting at $ 277.00 USD
Free Shipping
Starting at $ 277.00 USD
Free Shipping
E36/E46/M50/M52/M54 STARTER - THIS ONE IS THE "LATER" STYLE THAT DOES NOT REQUIRE NUTS. A refundable core charge will be added to your sale, refunded to you when we get your old starter back. Replaces Bosch part number SR0445X.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their exacting assembly process and high level of durability you can expect a long service life from all Bosch products.​

This item fits the following BMWs:
1990-1991 E30 BMW 318i 318is 318ic
1992-1998 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
1991-1995 E34 BMW 525i
1997-2003 E39 BMW 525i 528i 530i
2004-2005 E60 BMW 525i 530i
2004-2005 E83 BMW X3 2.5i X3 3.0i
1996-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
1998-2000 Z3 BMW M Roadster M Coupe
2003-2005 E85 BMW Z4 2.5i Z4 3.0i
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Genuine BMW - Corporate Logo
T#:36621
Part#: 11617832298
Special Order: No Guaranteed ETA
3% off MSRP $ 72.99

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

$ 70.99 USD
Free Shipping
3% off MSRP
$ 72.99

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

$ 70.99 USD
Free Shipping


Genuine BMW Pipe
This item fits the following BMW Chassis:
E46 M3,E46

Fits BMW Engines including:
S54


Genuine BMW - Corporate Logo
T#:13098
Part#: 12517831649
Special Order: No Guaranteed ETA
3% off MSRP $ 608.99

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$ 592.99 USD
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3% off MSRP
$ 608.99

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

$ 592.99 USD
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Genuine BMW wiring harness for engine transmission module.
Packaged by Turner - Corporate Logo
T#:15744016
Part#: 11137832023-KT
Ships on Sep 2, 2026
$ 696.99

This product was last offered at the strikethrough price on
07-23-2026

$ 691.99 USD
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$ 691.99 USD
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The S54 engine has a known history of rod bearing failure, and if your engine is higher mileage, don't let this catastrophic failure happen to you. Replace your rod bearings and prevent a spun bearing which can trash your crankshaft. BE Bearings, in conjunction with Clevite, an OE bearing manufacturer, have redesigned and manufactured the bearings for greater clearance and have changed the original material composition from tin-aluminum to lead-copper. This upgrade incorporated the state-of-the-art Clevite Tri-Metal design and featured a Tri-Armor™ coating. This allows for the additional lubrication for wear prevention, plus, the softer bearings are better for your engine and are more tolerant of foreign particles suspended in your oil. Another benefit from this is that the oil can now be sent for testing to accurately gauge the amount of wear occurring in the engine. Kit includes Upper and lower BE Bearings upgraded rod bearings for extra protection against wear Hardware Oil filter Castrol TWS Edge Professional Oil pan gasket Oil pan cover gasket RedLine assembly lube
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Mahle Motorsports - Corporate Logo
T#:2929007
Part#: 930000145
Special Order: No Guaranteed ETA
$ 1,088.50 USD
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Forged, 2618. Get the performance and reliability your S54 needs with MAHLE Motorsports PowerPak Piston Kit. Replacing the weaker factory cast aluminum pistons with the strength and durability of a forged piston.
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Mahle Motorsports - Corporate Logo
T#:2929008
Part#: 930000145T
Special Order: No Guaranteed ETA
$ 1,271.99 USD
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$ 1,271.99 USD
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Forged, 2618. Get the performance and reliability your S54 needs with MAHLE Motorsports PowerPak Piston Kit. Replacing the weaker factory cast aluminum pistons with the strength and durability of a forged piston.
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Mahle Motorsports - Corporate Logo
T#:2958763
Part#: 930286125T
Special Order: No Guaranteed ETA
$ 1,271.99 USD
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$ 1,271.99 USD
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Forged, 2618. Get the performance and reliability your S54 needs with MAHLE Motorsports PowerPak Piston Kit. Replacing the weaker factory cast aluminum pistons with the strength and durability of a forged piston.
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Mahle Motorsports - Corporate Logo
T#:2929006
Part#: 930000135
Special Order: No Guaranteed ETA
$ 1,085.99 USD
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$ 1,085.99 USD
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Forged, 2618. Get the performance and reliability your S54 needs with MAHLE Motorsports PowerPak Piston Kit. Replacing the weaker factory cast aluminum pistons with the strength and durability of a forged piston.
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Mahle Motorsports - Corporate Logo
T#:2958765
Part#: 930286135T
Special Order: No Guaranteed ETA
$ 1,271.99 USD
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$ 1,271.99 USD
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Achieve enhanced performance and reliability for your BMW S54 engine with the MAHLE Motorsports PowerPak Piston Kit. This kit replaces the factory cast aluminum pistons with robust forged pistons, offering superior strength and durability. MAHLE forged pistons are engineered to withstand extreme heat, detonation, and pressure, making them ideal for high-performance engines. MAHLE Motorsport's PowerPak and PowerPak+ piston kits ensure exceptional reliability and performance, elevating your BMW engine build to new heights. The range includes BMW piston sets in 2618, 4032, and M142 alloys, catering to N54, S54, and Mini Cooper models. These piston sets come complete with pins, clips, and rings, designed for both motorsport applications and those seeking to enhance daily driver performance. Notably, the latest addition is the B58 3.0L, featured in the 2020 Toyota Supra. Drawing on over 95 years of performance expertise and employing MAHLE-manufactured machinery for unique features, MAHLE Motorsport ensures uncompromising quality.
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Mahle Motorsports - Corporate Logo
T#:2929005
Part#: 930000135T
Special Order: No Guaranteed ETA
$ 1,271.99 USD
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$ 1,271.99 USD
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Forged, 2618. Get the performance and reliability your S54 needs with MAHLE Motorsports PowerPak Piston Kit. Replacing the weaker factory cast aluminum pistons with the strength and durability of a forged piston.
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Mahle Motorsports - Corporate Logo
T#:2929004
Part#: 930000045T
Special Order: No Guaranteed ETA
$ 1,271.99 USD
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$ 1,271.99 USD
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Forged, 2618. Get the performance and reliability your S54 needs with MAHLE Motorsports PowerPak Piston Kit. Replacing the weaker factory cast aluminum pistons with the strength and durability of a forged piston.
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Mahle Motorsports - Corporate Logo
T#:2928979
Part#: 197843112T
Special Order: No Guaranteed ETA
$ 1,103.99 USD
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$ 1,103.99 USD
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Forged 4032. Get the performance and reliability your M54 needs with MAHLE Motorsports PowerPak Piston Kit. Replacing the weaker factory cast aluminum pistons with the strength and durability of a forged piston.
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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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Cat Cams - Corporate Logo
T#:578587
Part#: 1304406
Special Order: No Guaranteed ETA
$ 1,642.99 USD
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$ 1,642.99 USD
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Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.

ECS - Corporate Logo
T#:394319
Part#: 012017ECS
In Stock at Vendor
Sale - Save 8% $ 570.99

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

Starting at $ 525.89 USD
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Sale - Save 8%
$ 570.99

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

Starting at $ 525.89 USD
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If you're not sure if your Vanos seals are bad then the only question you need to answer is if you've replaced them. Every unit from the factory came with the same failure prone o-rings and seals, even the re-manufactured units you can still get today. The only real fix is by replacing the seals and o-rings with material that is built to last in the oiled, extreme temperature environment found in these kits. 

A premium product replacement with easy to follow instructions makes rebuilding your Vanos unit a must. Even thought the power loss is barely felt it's the opposite result once you replace the seals, every car that gets rebuilt ends up wowing the customer and all of them saying they didn't realize what they lost. 

There are a number of symptoms that will plague your car as a result of these failing seals such as erratic idle, engine hesitation, stalling, and increased fuel consumption to name a few. If you've been chasing down any of these symptoms with no fix then this could be your issue.

While you 're replacing the seals in your Vanos unit it a good time to install anti-rattle spacers to tighten up the gaps in your stock assembly and get rid of that noisy Vanos clatter.

Rebuild instructions : http://bd8ba3c866c8cbc330ab-7b26c6f3e01bf511d4da3315c66902d6.r6.cf1.rackcdn.com/PDF_12017_BMW_M5X_Dual_Vanos_Rebuild_Kits.pdf

This item fits the following BMWs: 

1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi 
1999-2003 E39 BMW 525i 528i 530i 
2004-2010 E60 BMW 525i 530i 
2004-2006 E83 BMW X3 2.5i X3 3.0i 
2000-2006 E53 BMW X5 3.0i 
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i 
2003-2005 Z4 BMW Z4 2.5i Z4 3.0i 

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Packaged by Turner - Corporate Logo
T#:393209
Part#: E46S54SIPULLEY
Ships in 4 Business Days
Sale - Save 16% $ 1,029.99

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

Starting at $ 870.23 USD
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Sale - Save 16%
$ 1,029.99

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

Starting at $ 870.23 USD
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Shark Injector Performance Software
The enthusiast's choice for over a decade, the Shark Injector's performance is only equaled by its own ease of install! Tune your ECU at the press of a button simply by plugging into the under-dash OBDII diagnostic port, there is no removal of your car's computer; no laptop or cables required. What does the Shark offer?

  • Excellent horsepower and torque gains - peak: 18whp/11wtq, max: 22whp/16wtq
  • Faster and smoother throttle response
  • Top speed limiter removed
  • Extremely easy to install/uninstall
  • Reversible and reusable
  • Elevated 8,250 RPM rev limiter
  • Compatible with 91 octane; 93 recommended

Turner Motorsport Power Pulleys 
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! We measured 10.7 whp at 6960 rpm and 8.1 lb-ft of torque at 5550 on a 1995 M3. Race pulleys deliver even more power. 

Another "no-downside" upgrade, we even include a new belt. Total install time for a 3-piece pulley set should be around 1.5 hours. We offer three options in pulleys:
1.) No alternator pulley included - for cars with big amps and powerful stereo systems that need the extra juice.
2.) Street Power Pulleys - our most popular option with no downside!
3.) Race Power Pulleys - delivering 15 "free" horsepower, this set underdrives the water pump, power steering pulley, and alternator for lower temps, less wear, and more power. Not for street use. 

 

 

Intake Air Temperature Relocation Kit
Looking to maximize your power gains? Add a Turner IAT Relocation to combat power-robbing heat soak - the only true plug-and-play solution available. Heat soak is a real plague on consistent power for a stock or tuned vehicle. Click here to read more about our IAT relocation kit.

 

This item fits the following BMWs:
2001-2006 E46 BMW M3

 

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Packaged by Turner - Corporate Logo
T#:2850
Part#: TMS2850
Ships in 4 Business Days
Sale - Save 17% $ 916.95

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

$ 760.48 USD
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Sale - Save 17%
$ 916.95

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

$ 760.48 USD
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2001-2/2003 E46 330i/Ci, 2001-05 330Xi Stage 1 Performance Package
Peak Power Gain: +8hp / +10ft-lbs
Rev limit: 7000
Octane: 91 or higher

Our Stage 1 kit featuring a cold-air intake kit and matching performance software. The aFe intake is made with heat-blocking materials, reducing underhood temperatures and not contributing to heat soak of the air filter. aFe uses an oiled cotton air filter for maximum air flow and excellent filtration. The kit is supplied complete with heat shield, intake tube, sealing materials, hardware, and install instructions.

The software is tuned by BMW tuning whiz Jim Conforti and supplied with the Shark Injector. The Shark Injector is a do-it-yourself reflash tool that plugs into the OBD diagnostic plug in your dash. With the push of a button, it will copy your stock software and reflash your computer with the performance tune. You can set it back to stock at any time by following the same procedure.

Both of these items are packaged and work together. They provide a solid performance boost with a low upfront cost. For an excellent 'bang for the buck' upgrade, the software and intake are a great choice (TMS Underdrive Pulleys would also be on that list).

Related Upgrades: We are often asked what would complement our software and intake packages. Within any Stage, we recommend our Underdrive Power Pulley Kits. The Power Pulley Kit will under-drive the alternator, water pump, and power steering pump. Under-driving means each component is moving slower which requires less power. The saved horsepower is put back to the engine where it transfers to power at the wheels. Power gains are typically 10 horsepower at the wheels.

We also recommend upgrading the cat-back muffler for slightly more performance, lighter weight, and a more-aggressive sound. Our favorite E46 mufflers are the Supersprint, Borla, or Corsa exhausts. The Supersprint is the quietest and most like stock while the Corsa is the most aggressive (Borla being in the middle). You can expect a gain of 5whp with any of these exhausts.

2001-2/2003 E46 330i/Ci, 2001-05 330Xi Stage 1 Engine Upgrade Kit includes:
aFe Cold Air Intake (oiled cotton filter, heat shield, intake tube)
Shark Injector performance software

Applications:
2001-2/2003 E46 330i sedan, 330Ci coupe and convertible (check your driver's door pillar for production date data)
2001-2005 330Xi sedan
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Packaged by Turner - Corporate Logo
T#:586777
Part#: E46M3PP1
Ships in 4 Business Days
Sale - Save 10% $ 928.00

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

Starting at $ 835.20 USD
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Sale - Save 10%
$ 928.00

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

Starting at $ 835.20 USD
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The E46 M3 was one of the most versatile cars ever produced. Want a car that handles well, is comfortable, and is perfect for driving down twisting roads on the weekend? E46 M3. Or how about something you can take to weekend track days and enjoy without any major modifications? E46 M3. Maybe you want to go full race car? E46 M3! The reliability, power, and handling characteristics made this car a legend that is still highly sought after, not to mention how amazing this car looks. Whatever your needs may be, we have a number of Turner Power Packs designed to start building the M3 of your dreams. We offer everything from Stage 1 to Stage 4+, and even a Track Inspired Power Pack designed for the ultimate in performance needs! This stage 1 kit offers the following upgrades: aFe Performance Intake Kit Pro5r - Increase airflow volume to increase performance at all RPMs Shark Injector Performance Software - Tune your car for optimal performance, perfectly paired with any and all modifications
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Packaged by Turner - Corporate Logo
T#:27372104
Part#: 11AMUOPSK-M54KT2
In Stock
$ 427.99

This product was last offered at the strikethrough price on
05-15-2026

$ 423.99 USD
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$ 423.99 USD
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Experience peace of mind with Achilles Motorsports' upgraded oil pump shaft kit, designed specifically to address the well-known harmonics-related issues plaguing the M54 engine. Say goodbye to worries about oil pump shaft failures causing sudden oil pressure drops.

Achilles Motorsports goes above and beyond, crafting their oil pump shafts from the toughest materials and subjecting them to rigorous heat treatment processes for maximum strength. The core of this kit features a hardened Chromoly shaft, precision centerless ground to ensure absolute accuracy. What sets this kit apart is its exclusive square key lock system, preventing gear slippage and reinforcing the gear mounting area for added durability.

No more concerns about the oil pump nut coming loose—Achilles Motorsports has replaced it with an extended-length bolt, EDM drilled for safety wire, ensuring a secure fit in all conditions. Avoid costly engine repairs due to oil pump failures by taking proactive measures with this comprehensive upgrade kit.

This kit, curated by the team at Turner Motorsport, includes everything you need for a complete upgrade:

Achilles Motorsports Upgraded Oil Pump Shaft Liqui Moly Molygen 5w-40 Oil (6 liters) Hengst Oil Filter Oil Drain Plug and Reminder Sticker Elring Oil Pan Gasket IWIS Oil Pump Chain Upgrade your M52TU/M54 engine and shield it from potential catastrophic failure with this meticulously crafted upgrade kit from ECS Tuning.

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IRP - Individual Racing Parts - Corporate Logo
T#:401414
Part#: IRPEGS-1
Special Order: No Guaranteed ETA
$ 185.99 USD
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$ 185.99 USD
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Stock mounts are made from soft rubber and are sometimes filled with fluid to give a car the most comfortable ride possible. The soft rubber and fluid helps to reduce the total amount of vibration, noise, and harshness (NVH) that is transferred into the cabin. The problem with this is driveline slop. The stock mounts allow a lot of excess movement and increases the amount of time it takes to transfer power to the wheels.

In order to address this issue, performance mounts can be substituted to reduce the amount of slop and transfer power to the wheel quicker. Two options for this are polyurethane mounts and solid mounts. 

The middle ground is Polyurethane. Polyurethane is much stiffer than rubber, but these still let a large amount of movement in comparison to solid mounts. These are great for sporty, aggressive street driving, but for the track are not ideal.

For the track, solid mounts are great. Solid mounts give you an immediate transfer of power, at the cost of increase NVH. This is great for the track where comfort is the least of your worries and power is all that is important.

Features:

  • Aluminum and Polyurethane Construction
  • 80A Durometer Rating
  • New Hardware
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AMC - Corporate Logo
T#:363902
Part#: 11127514540-2
Special Order: No Guaranteed ETA
$ 1,864.99 USD
$ 1,864.99 USD
Complete cylinder head with guides, seats, valves, & springs
Febi - Corporate Logo
T#:382335
Part#: 11281748131
Ships on Oct 30, 2026
$ 31.99 USD
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Replacement is recommend with every belt service