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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Corteco - Corporate Logo
T#:37048680
Part#: 11131437237
In Stock at Vendor
$ 31.99

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

$ 30.99 USD
Free Shipping on orders $49 and up
$ 30.99 USD
Free Shipping on orders $49 and up

Is your BMW showing signs of an oil leak? One of the most common causes is a failing oil pan gasket, a vital component that prevents oil loss and keeps your engine running smoothly. Over time, the gasket—typically made from metal with a durable rubber sealing bead—can wear out due to heat cycles, pressure fluctuations, and general aging. When the rubber bead deteriorates, it compromises the seal and results in leaks.

Ignoring an oil pan gasket leak can lead to more significant issues, such as low oil levels, reduced engine efficiency, and even serious engine damage. Addressing this problem early is crucial to maintaining your vehicle's performance and longevity.

For a reliable solution, choose Corteco. Known for their precision engineering and OE-grade materials, Corteco gaskets are crafted to deliver a perfect fit and exceptional durability. Trust Corteco to provide a high-quality replacement that ensures your BMW stays leak-free and running at its best.

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Corteco - Corporate Logo
T#:15412453
Part#: 11127831920
Back Ordered
Sale - Save 5% $ 154.99

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

$ 146.78 USD
Free Shipping on orders $49 and up
Sale - Save 5%
$ 154.99

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

$ 146.78 USD
Free Shipping on orders $49 and up
Not having a critical seal or gasket on hand can ruin your work and this gasket set can prevent that from happening. This OE Cortco set includes all gaskets that should be replaced during a head service.
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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
Free Shipping on orders $49 and up

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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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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Corteco - Corporate Logo
T#:594912
Part#: 11141706785
In Stock
$ 42.99

This product was last offered at the strikethrough price on
06-08-2026

$ 19.99 USD
Free Shipping on orders $49 and up
$ 19.99 USD
Free Shipping on orders $49 and up
The rear main oil seal or crankshaft seals is one of the most difficult to replace. However, they often fail, and when they do, your car will be marking it's territory with little oil drops wherever you park. Apart from making a mess, it can also cause oil to come in contact with the clutch surface. Replace yours and keep your oil in your engine.
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OEM INA Idler Pulley - Multiple BMWs
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Ina - Corporate Logo
T#:1626
Part#: 11287841228
In Stock
$ 18.99 USD
Free Shipping on orders $49 and up
$ 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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Ina - Corporate Logo
T#:42301988
Part#: ZC0107
Ships in 7 Business Days
$ 20.99 USD
Free Shipping on orders $49 and up
Ensure peak lubrication performance and long-term engine reliability with the OEM INA Engine Oil Pump Chain
Corteco - Corporate Logo
T#:596700
Part#: 11349064457
Back Ordered
$ 8.99 USD
Free Shipping on orders $49 and up
This kit includes seals that can be used on either intake or exhaust valves