BMW Engine Parts for BMW Z4 M Roadster S54 (2003-2008)

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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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Timing Chain Tensioner INA- M52 2.5L & 2.8L / S54 3.2L
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Ina - Corporate Logo
T#:403736
Part#: 11317838675
In Stock
$ 139.99

This product was last offered at the strikethrough price on
05-06-2026

$ 136.99 USD
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$ 136.99 USD
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Turner Motorsport BMW Timing Chain Tensioner Replacement

Introducing the BMW Timing Chain Tensioner Replacement by Turner Motorsport, a vital component to maintain optimal tension and prevent timing chain issues. Engineered for reliability, this replacement ensures the proper functioning of your cam gears and crank, preventing potential engine damage.

Benefits:

  • Crucial for timing chain tension
  • Prevents chain skipping
  • Safeguards against catastrophic engine damage
  • Quiets noisy chains for a smoother engine operation

Replace your BMW's timing chain tensioner with this Turner Motorsport solution to keep your engine running smoothly.

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Bremmen Parts - Corporate Logo
T#:36913378
Part#: 12617607910
In Stock
Sale - Save 15% $ 153.99

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

$ 130.89 USD
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Sale - Save 15%
$ 153.99

This product was last offered at the strikethrough price on
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$ 130.89 USD
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The engine oil level sensor tracks the oil level in the engine's oil pan, sending real-time data to the ECU (Engine Control Unit). This vital information ensures the engine has the right amount of oil for proper lubrication. Commonly featured in modern vehicles, the oil level sensor acts as an essential safeguard against low oil levels, helping prevent potential engine damage.
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Ina - Corporate Logo
T#:2479
Part#: 11281433571
Ships in 9 Business Days
$ 62.17 USD
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$ 62.17 USD
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This is an OEM INA AC Belt Tensioner with pulley for all 2001-2006 E46 M3, as well as all 1999-2002 non-M E46 3 series models. These belt tensioner units are known to fail, and include the tensioner pulley (as shown).

OEM Schaeffler (INA, LuK, & FAG) is an engineering company that focuses on high-performance, precision manufacturing. With their individual brands INA, Luk, and FAG providing exceptionally high quality parts directly to BMW, as well as countless other automotive companies, their history of reliability and variety of offered parts makes Schaeffler a go-to replacement parts provider for all of us here at Turner Motorsport.

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!

This Air Conditioning / AC Belt Tensioner with Pulley fits:
1999-2000 E46 3 Series 323i, 323Ci, 328i, 328Ci
2001-2002 E46 3 Series 325i, 325Ci, 330i, 330Ci
2001-2006 E46 M3 coupe & convertible

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Febi - Corporate Logo
T#:363804
Part#: 11287838797
Ships on Oct 19, 2026
$ 83.99 USD
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$ 83.99 USD
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The Hydraulic Alternator Belt Tensioner is exposed to a lot of dirt, salt, and other debris due to its front lower location. This can cause the tensioner to seize and not allow the belt tensioner to adjust. Replace your belt tensioner with this OEM high quality hydraulic tensioner for many years of reliable operation to come.
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Bremmen Parts - Corporate Logo
T#:36913379
Part#: 12147539171
In Stock
Sale - Save 20% $ 89.99

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

$ 71.80 USD
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Sale - Save 20%
$ 89.99

This product was last offered at the strikethrough price on
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$ 71.80 USD
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The camshaft position sensor is essential for assisting the engine DME by monitoring the camshaft's position. The data from this sensor is key to optimizing ignition timing and ensuring smooth engine performance.

Often referred to as the CMP sensor, this component is crucial for the overall functionality of the powertrain. A failing camshaft position sensor can cause a range of issues, including engine stumbling, hesitation during acceleration, power loss, and even starting difficulties or complete failure to start.

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Mishimoto - Corporate Logo
T#:380389
Part#: MMOCF-BMW
In Stock
$ 88.99 USD
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$ 88.99 USD
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Install a custom oil cooler on your street or track BMW with help from the Mishimoto Oil Line Fitting Kit! This kit has 100% CNC-machined components, including the 6061 aluminum oil line fittings and the 303 stainless steel tie-down plate. This adapter kit is applicable for BMW E36 (Euro oil-housing equipped), E46, and E90 vehicles, and allows for the use of -10AN fittings to route oil to a custom oil cooler setup. This is an ideal upgrade for drivers seeking additional cooling for track environments or for those who would like additional engine bay space for an oil accumulator or supercharger setup. Included in this kit are two stock BMW O-rings for leak-free installation. Features: Allows for use of -10AN fittings for custom oil cooler setup 100% CNC-machined components, including 6061 aluminum fittings and 303 stainless steel tie-down plate Includes durable stock BMW O-rings for leak-free installation Provides additional engine bay space for applications with an oil accumulator or supercharger setup Included as part of the Mishimoto BMW E46 M3 Oil Cooler Kit Mishimoto Lifetime Warranty Included: (1) Stainless Steel Fitting Clamp (2) -10AN Fittings (2) BMW Oil O-rings (1) M8 x 1.25 x 25mm Button-Head Bolt Mishimoto Lifetime Warranty WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov. ​
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Glyco - Corporate Logo
T#:375823
Part#: 11211706847
In Stock
$ 136.06

This product was last offered at the strikethrough price on
07-15-2026

$ 125.04 USD
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$ 125.04 USD
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Standard bore
Bremmen Parts - Corporate Logo
T#:37655984
Part#: 13907831770
In Stock
Sale - Save 20% $ 80.99

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

$ 64.46 USD
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Sale - Save 20%
$ 80.99

This product was last offered at the strikethrough price on
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$ 64.46 USD
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Over time, valves can fail, often getting stuck in one position and causing the engine to run poorly. This Fuel Tank Breather Valve is a simple replacement that resolves rough idling and helps clear engine codes, restoring smooth performance.
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Mishimoto - Corporate Logo
T#:597051
Part#: MMOCCLA
In Stock
$ 127.99 USD
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$ 127.99 USD
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WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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Bremmen Parts - Corporate Logo
T#:26305100
Part#: 11281433571
In Stock
Sale - Save 21% $ 59.99

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

$ 47.32 USD
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Sale - Save 21%
$ 59.99

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$ 47.32 USD
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Iwis - Corporate Logo
T#:34869
Part#: 11411401399
In Stock
$ 30.99

This product was last offered at the strikethrough price on
06-19-2026

$ 29.99 USD
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$ 29.99 USD
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This is an OEM oil pump chain for BMW's with the S54 6 cylinder engine. We recommend replacing the oil pump chain any time you remove the oil pump from the car.

IWIS is a leader in complex engine parts. Using advanced techniques in research and design allows IWIS to offer parts that not only repair, but ultimately improve the way your engine runs.

This item fits the following BMWs:
2001-2006 E46 BMW M3
2001-2002 Z3 BMW M Roadster M Coupe
2006-2008 E85 BMW Z4 M Roadster M Coupe
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Febi - Corporate Logo
T#:382327
Part#: 11142249533
Ships on Oct 19, 2026
$ 44.99 USD
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Replace when doing a clutch job.


Mishimoto - Corporate Logo
T#:372557
Part#: MMOCCCF
In Stock
$ 162.99 USD
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$ 162.99 USD
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Universal kit with a catch can and rubber hose; for retrofitting on a variety of vehicles. Carbon fiber catch can prevents a harmful buildup of oil inside of the turbocharger, intake manifold, intercooler and piping. Separates oil particles from PCV/CCV air Defends intercooler, intake system, and essential components from oil blow-by Made from lightweight carbon fiber Compact design makes for easy engine bay placement Checking fluid levels made easy with built in sight tube Comes complete with mounting bracket, hose, all necessary clamps, fittings, and mounting hardware Mishimoto Lifetime Warranty WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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OEM INA Hydraulic Belt Tensioner - E36, E46, E39 6-cyl
We Price Match - Give Us A Call or Chat!
Ina - Corporate Logo
T#:1603
Part#: 11281717188
Ships in 1 day
$ 79.99 USD
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$ 79.99 USD
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For Alternator / Water Pump Belt

Hydraulic Belt Tensioner for E36, E46, E39 6-cyl models. This is the oil-filled tensioner that keeps the main drive belt in the proper tension. Over time the piston seals inside allow fluid to leak out. The tensioner becomes frozen or inoperable. Replacement is the best corrective action to take. This can be done during any belt or pulley service or anytime the fan is off the engine.

OEM Schaeffler (INA, LuK, & FAG) is an engineering company that focuses on high-performance, precision manufacturing. With their individual brands INA, Luk, and FAG providing exceptionally high quality parts directly to BMW, as well as countless other automotive companies, their history of reliability and variety of offered parts makes Schaeffler a go-to replacement parts provider for all of us here at Turner Motorsport.

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!


NOTE: These BMW's may have been equipped with either a mechanical or hydraulic tensioner. Only for cars with Hydraulic Belt Tensioners. Please check before ordering.

This tensioner pulley fits the following BMWs:
1991-1995 E34 525i (M50 engine)
1992-1999 E36 325i, 325is, 328i, 328is, 323is
1995-1999 E36 M3 (M3 3.0 & M3 3.2 liter)
1997-2003 E39 525i, 528i, 530i
1999-2000 E46 323i, 323Ci, 328i, 328Ci
2001-2005 E46 325i, 325Ci, 325xi, 330i, 330Ci, 330xi
2001-2006 E46 M3 coupe & convertible
2000-2006 X5 3.0 liter (E53 chassis)
2006 525i, 530i(M54 engine)
1997-2002 Z3 & MZ3 2.8, M Roadster, M Coupe
2003-2009 Z4 M Coupe and Roadster

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Rein Rear Crankshaft Seal - E30, E32, E34, E36, E39, E46, E53, E60, E...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:361056
Part#: 11142249533
In Stock at Vendor
$ 22.99 USD
Free Shipping on orders $49 and up
Replace when doing a clutch job.

OEM Febi Idler Pulley - Multiple BMWs
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:382342
Part#: 11287841228
In Stock
$ 48.99 USD
Free Shipping on orders $49 and up
$ 48.99 USD
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This is an OEM Febi Upper Idler Pulley, also known as the roller pulley or deflection pulley. The upper and lower idler pulleys are known to be the primary sources for 'belt squealing'. The pulley is also encased in rubber which will crack over time. If left without service the rubber could fail completely, chucking the belt and leaving you stranded. Replacement is a very simple procedure and can be done anytime the fan is off the engine (belt replacement, water pump service, alternator replacement, etc).
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Mishimoto 19 Row Universal Oil Cooler
For custom applications only. Not a direct bolt on.
Mishimoto - Corporate Logo
T#:378414
Part#: MMOCUL
In Stock at Vendor
$ 536.99 USD
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$ 536.99 USD
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Even under optimum driving conditions increased oil temperatures will cause a drop in pressure and will decrease the ability for your engine to be properly lubricated. With this new oil cooler, you can keep your oil temperatures down for optimum driving conditions. The kit includes four-feet of stainless braided line, adapter fittings, and oil filter sandwich adapter. Rows: 19 Overall Dimensions: 13" x 5.5" x 2" Core Dimensions: 11.25" x 5.5" x 2" Braided Hoses: 4ft .75 inch & 4ft 9 inch Braided Hose Fittings: -10AN Sandwich Plate Fittings: -10AN WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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Bremmen Parts - Corporate Logo
T#:35121140
Part#: 16137193479
Ships on Oct 6, 2026
Sale - Save 18% $ 65.99

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

$ 54.39 USD
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Sale - Save 18%
$ 65.99

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

$ 54.39 USD
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Mishimoto - Corporate Logo
T#:23020165
Part#: MMBCC-CBTWO
In Stock
$ 160.99 USD
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Optimize your vehicle's performance and shield crucial components with the Mishimoto Compact 2-Port Baffled Oil Catch Can. This innovative solution effectively separates oil particles from PCV/CCV air using a 50-micron bronze filter, ensuring defense against oil blow-by for your intercooler, intake system, and vital parts. Constructed with a patented billet 6061 aluminum can sealed with Viton™ O-Rings, this catch can guarantees both durability and effectiveness.

Equipped with a universal mounting bracket, it allows adaptable installation and comes complete with two CNC-machined aluminum 1/2" barbed hose fittings. With an enhanced 3 oz internal capacity, service intervals are prolonged, while its fully serviceable filter and can ensure enduring functionality.

Engineered for safety in pressurized applications, the internal air diverter enhances oil separation by amplifying air turbulence. Available in black, red, or polished finishes, this catch can preserves proper octane levels, reducing potential detonation and promoting extended engine life.

The product package includes the Compact 2-Port Baffled Oil Catch Can, two Aluminum 1/2" Barbed Fittings, and a Universal Mounting Bracket, all backed by the Mishimoto Lifetime Warranty.

WARNING! Prop 65 may apply to this product.

Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to all companies selling products in California.

Prop 65 mandates listing any chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm.

For more information about California Prop 65 warning, visit: www.P65Warnings.ca.gov.

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Mishimoto Universal 10 Row Oil Cooler
For custom applications only. Not a direct bolt on.
Mishimoto - Corporate Logo
T#:378421
Part#: MMOCU
In Stock at Vendor
$ 410.99 USD
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$ 410.99 USD
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This universal oil cooler from Mishimoto is far superior to the factory unit with its 11" x 2.76" x 1.97" core. Even under optimum driving conditions increased oil temperatures will cause a drop in pressure and will decrease the ability for your engine to be properly lubricated. With this new oil cooler, you can keep your oil temperatures down for optimum driving conditions. The kit includes 4 feet of stainless braided line, adapter fittings, and oil filter sandwich adapter. Mishimoto Automotive is a leading manufacturer of aftermarket performance cooling products. The company was established back in 2003 with one goal. That goal was to provide customers with quality cooling system upgrades that work on the track and on the road. At Mishimoto, you never have to worry about the quality of the product you are installing. This kit is universal and is not a direct bolt on. *For custom applications only. Not a direct bolt on. WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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Mahle Motorsports - Corporate Logo
T#:2929003
Part#: 930000045
In Stock at Vendor
$ 1,088.99 USD
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$ 1,088.99 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#:2958764
Part#: 930286125
Back Ordered
$ 1,088.99 USD
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$ 1,088.99 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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Glyco - Corporate Logo
T#:375824
Part#: 11211706850
In Stock at Vendor
$ 126.61

This product was last offered at the strikethrough price on
07-15-2026

$ 118.92 USD
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$ 118.92 USD
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59.75MM(+0.25) bore


Autel - Corporate Logo
T#:2914116
Part#: AL329
Ships in 1 Business Day
$ 49.99 USD
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OBDII Code Reader
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
$ 1,088.99

This product was last offered at the strikethrough price on
01-27-2026

$ 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#: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#:2929007
Part#: 930000145
Special Order: No Guaranteed ETA
$ 1,088.50 USD
Free Shipping on orders $49 and up
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#:2929008
Part#: 930000145T
Special Order: No Guaranteed ETA
$ 1,271.99 USD
Free Shipping
$ 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
Free Shipping
$ 1,271.99 USD
Free Shipping
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#:2958767
Part#: 930286145
Back Ordered
$ 1,088.99 USD
Free Shipping
$ 1,088.99 USD
Free Shipping
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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Bremmen Parts - Corporate Logo
T#:52551471
Part#: 12617607910KT1
In Stock
New Item
Sale - Save 15% $ 159.99

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

$ 135.99 USD
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Sale - Save 15%
$ 159.99

This product was last offered at the strikethrough price on
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$ 135.99 USD
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Reads oil level in oil pan, includes new hardware and seal
OEM INA Idler Pulley - Multiple BMWs
We Price Match - Give Us A Call or Chat!
Ina - Corporate Logo
T#:1626
Part#: 11287841228
In Stock
$ 18.99 USD
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$ 18.99 USD
Free Shipping on orders $49 and up
This is an OEM INA Upper Idler Pulley, also known as the roller pulley or deflection pulley. The upper and lower idler pulleys are known to be the primary sources for 'belt squealing'. The pulley is also encased in rubber which will crack over time. If left without service the rubber could fail completely, chucking the belt and leaving you stranded. Replacement is a very simple procedure and can be done anytime the fan is off the engine (belt replacement, water pump service, alternator replacement, etc).
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Bremmen Parts - Corporate Logo
T#:30629656
Part#: 11287841228
In Stock
Sale - Save 22% $ 19.99

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

$ 15.50 USD
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Sale - Save 22%
$ 19.99

This product was last offered at the strikethrough price on
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$ 15.50 USD
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Bremmen Parts - Corporate Logo
T#:28171519
Part#: 91166A270-100
In Stock
Sale - Save 59% $ 1.99

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

$ 0.81 USD
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Sale - Save 59%
$ 1.99

This product was last offered at the strikethrough price on
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$ 0.81 USD
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For M8 Screw Size, 8.4 mm ID, 16 mm OD
Ina - Corporate Logo
T#:393585
Part#: 12311713153
In Stock
$ 10.99 USD
Free Shipping on orders $49 and up

The OEM INA Tensioner Bearing allows the belt tensioner arm to rotate and apply pressure to the serpentine belt. With a bad bearing, the arm may seize up and prevent the tensioner from working properly.

OEM Schaeffler (INA, LuK, & FAG) is an engineering company that focuses on high-performance, precision manufacturing. With their individual brands INA, Luk, and FAG providing exceptionally high quality parts directly to BMW, as well as countless other automotive companies, their history of reliability and variety of offered parts makes Schaeffler a go-to replacement parts provider for all of us here at Turner Motorsport.

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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Ina - Corporate Logo
T#:2045
Part#: 11281748131
In Stock
$ 19.99 USD
Free Shipping on orders $49 and up
$ 19.99 USD
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This is an OEM INA tensioner pulley, also known as the adjusting pulley and lower pulley. This pulley is mounted on the belt tensioner near the center of the belt assembly. The upper and lower pulleys are known to be the primary sources for 'belt squealing'. This pulley is also encased in rubber which will crack over time. If left without service the rubber could fail completely, chucking the belt and leaving you stranded. Replacement is a very simple procedure and can be done anytime the fan is off the engine (belt replacement, water pump service, alternator replacement, etc).

This pulley is mounted along with the hydraulic belt tensioner but can be replaced on its own. It is used for the main drive belt on the M50-M54 family engines (M50, M50TU, M52, S52, M52TU, M54, M56, and S54 engines). This is the same belt that covers the water pump/alternator/power steering systems. Replacement is a very easy procedure (requires fan removal) and will have your engine purring in no time. Belt replacement is strongly recommended at the same time. If you have a mechanical belt tensioner, the pulley can only be replaced with a new tensioner.

OEM Schaeffler (INA, LuK, & FAG) is an engineering company that focuses on high-performance, precision manufacturing. With their individual brands INA, Luk, and FAG providing exceptionally high quality parts directly to BMW, as well as countless other automotive companies, their history of reliability and variety of offered parts makes Schaeffler a go-to replacement parts provider for all of us here at Turner Motorsport.

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!

If you need the hydraulic belt tensioner, click here.

This item is 70mm Diameter. Please check the diameter before ordering.

This tensioner pulley fits the following BMWs:
1991-1995 E34 525i (M50 engine)
1992-1999 E36 325i, 325is, 328i, 328is, 323is
1995-1999 E36 M3 (M3 3.0 & M3 3.2 liter)
1997-2003 E39 525i, 528i, 530i - Only for Hydraulic Tensioner
1999-2000 E46 323i, 323Ci, 328i, 328Ci - Only for Hydraulic Tensioner
2001-2005 E46 325i, 325Ci, 325xi, 330i, 330Ci, 330xi - Only for Hydraulic Tensioner
2001-2006 E46 M3 coupe & convertible - Only for Hydraulic Tensioner
2000-2006 X5 3.0 liter (E53 chassis)
2004 E60 525i, 530i (M54 engine)
1997-2002 Z3 & MZ3 2.5, 2.8, 3.0, M Roadster, M Coupe
2003-2009 Z4 M Coupe and Roadster

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OEM Rein Camshaft / Crankshaft Sensor O-Ring - Multiple BMWs ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:12463
Part#: 12141748398
In Stock
$ 4.99

This product was last offered at the strikethrough price on
06-29-2026

$ 2.75 USD
Free Shipping on orders $49 and up
$ 2.75 USD
Free Shipping on orders $49 and up
This is the o-ring used for most BMW camshaft sensors and crankshaft sensors. Although most sensors that we sell come with this o-ring at no charge, they may be the source of oil or fluid leaks.

Bremmen Parts - Corporate Logo
T#:22558959
Part#: 94235A080
In Stock
Sale - Save 62% $ 3.99

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

$ 1.53 USD
Free Shipping on orders $49 and up
Sale - Save 62%
$ 3.99

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

$ 1.53 USD
Free Shipping on orders $49 and up
Bremmen Parts - Corporate Logo
T#:22525960
Part#: 11531435808
In Stock
Sale - Save 20% $ 2.03

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

$ 1.62 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 2.03

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

$ 1.62 USD
Free Shipping on orders $49 and up
Useful for fixing leaks on air conditioning, fuel, and vacuum systems. Measures 20x3.

OEM Rein Oil Cooler Line O-Ring - Multiple BMWs
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:15159
Part#: 17222245358
In Stock
$ 4.99 USD
Free Shipping on orders $49 and up
This is the sealing o-ring used for many oil cooler kits on various BMW models. They're also a prime source for oil leaks because the o-ring gets 'flat' or shrinks or becomes damaged. These are usually easy to change though which puts an end to annoying small oil leaks.
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Bremmen Parts - Corporate Logo
T#:367185
Part#: 21014
In Stock
Sale - Save 26% $ 3.99

This product was last offered at the strikethrough price on
05-02-2026

$ 2.96 USD
Free Shipping on orders $49 and up
Sale - Save 26%
$ 3.99

This product was last offered at the strikethrough price on
05-02-2026

$ 2.96 USD
Free Shipping on orders $49 and up
Ideal for low pressure hoses. This hose clamp could be used on many vehicles for many different purposes.

Bremmen Parts - Corporate Logo
T#:30629659
Part#: 11281748131
In Stock
Sale - Save 19% $ 18.99

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

$ 15.29 USD
Free Shipping on orders $49 and up
Sale - Save 19%
$ 18.99

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

$ 15.29 USD
Free Shipping on orders $49 and up

This pulley is mounted along with the hydraulic belt tensioner but can be replaced on its own. It is used for the main drive belt on the M50-M54 family engines (M50, M50TU, M52, S52, M52TU, M54, M56, and S54 engines). This is the same belt that covers the water pump/alternator/power steering systems. Replacement is a very easy procedure (requires fan removal) and will have your engine purring in no time. Belt replacement is strongly recommended at the same time. If you have a mechanical belt tensioner, the pulley can only be replaced with a new tensioner.

This high-quality replacement from Bremmen Parts is designed for exact fitment on your BMW. Whether you're looking to complete much-needed preventative maintenance, or replacing a failed roller, choose this component from Bremmen Parts for a lasting repair.

If you need the hydraulic belt tensioner, click here.

This item is 70mm Diameter. Please check the diameter before ordering.

This tensioner pulley fits the following BMWs: 1991-1995 E34 525i (M50 engine) 1992-1999 E36 325i, 325is, 328i, 328is, 323is 1995-1999 E36 M3 (M3 3.0 & M3 3.2 liter) 1997-2003 E39 525i, 528i, 530i - Only for Hydraulic Tensioner 1999-2000 E46 323i, 323Ci, 328i, 328Ci - Only for Hydraulic Tensioner 2001-2005 E46 325i, 325Ci, 325xi, 330i, 330Ci, 330xi - Only for Hydraulic Tensioner 2001-2006 E46 M3 coupe & convertible - Only for Hydraulic Tensioner 2000-2006 X5 3.0 liter (E53 chassis) 2004 E60 525i, 530i (M54 engine) 1997-2002 Z3 & MZ3 2.5, 2.8, 3.0, M Roadster, M Coupe 2003-2009 Z4 M Coupe and Roadster

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Bremmen Parts - Corporate Logo
T#:1196079
Part#: 13641437476
In Stock
$ 4.99

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

$ 2.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 4.99

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

$ 2.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Fits between injector and fuel rail
Rein Fuel Injector O-Ring - E23, E24, E28, E30, E31, E32, E34, E36, E...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:362382
Part#: 13641730767
In Stock at Vendor
$ 6.17 USD
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Located on nozzle end of injector


Mishimoto - Corporate Logo
T#:51110138
Part#: MMIG-BMW-07
Ships in 3 Business Days
New Item
$ 41.99 USD
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Mishimoto’s Delphi-style ignition coils offer a premium solution for BMW owners looking to replace worn-out factory units.
Mishimoto - Corporate Logo
T#:51075078
Part#: MMIG-BMW-0204
Ships in 3 Business Days
New Item
$ 123.99 USD
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The Mishimoto BMW Ignition Coil is built to handle the intense heat cycles found in BMW’s modern turbocharged and naturally aspirated engines.