BMW Internal Engine Parts for BMW Z Series E85/6 (2003-2008)

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Rebuilding your engine or giving your cylinder head an overhaul? Internal engine components covers parts that are located within the engine block and cylinder head. Examples include: timing chains and tensioners, rocker arms, rod bolts and studs, head bolts, valve springs, connecting rods, and more. These are Genuine BMW engine parts, performance upgrades, or approved aftermarket brands that have a long track record of reliability and quality.

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WPC Performance Rod Bearing Replacement Kit - Late S54
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Packaged by Turner - Corporate Logo
T#:15710784
Part#: 11137834886-KT
In Stock
Sale - Save 8% $ 846.99

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

$ 777.63 USD
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Sale - Save 8%
$ 846.99

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

$ 777.63 USD
Free Shipping on orders $49 and up
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. WPC is a surface treatment that reduces friction and adds strength - two improvements that benefit internal engine components. Ultra-fine particles are fired at the surface at very high speeds, like shot-peening - but much, much smaller. The parts come out smoother and stronger due to thermal discharge. The two largest enemies of any high-performance engine are heat and friction - and WPC has found a way to reduce both. Kit includes Upper and lower WPC treated rod bearings for extra protection against wear Hardware Oil filter Castrol TWS Edge Professional Oil pan gasket Oil pan cover gasket RedLine assembly lube Connecting rod bolts
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Oil Pump Chain - E36 E46 E34 E39 Z3 Z4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Iwis - Corporate Logo
T#:14529
Part#: 11417576915
In Stock
$ 45.89 USD
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This is an OEM oil pump chain for BMW's with the M50/M52/M54/S50/S52 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:
1992-1998 E36 BMW 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 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
1998-2000 Z3 BMW M Roadster M Coupe
2003-2006 E85 BMW Z4 2.5i Z4 3.0i
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Oil Pump Chain - E46 M3, Z3M Z4M with S54 engine
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
Free Shipping on orders $49 and up
$ 29.99 USD
Free Shipping on orders $49 and up
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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OEM IWIS Lower Timing Chain - E36, E46, E39, Z3 E60
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Iwis - Corporate Logo
T#:362220
Part#: 11311432176
In Stock
$ 83.99

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

$ 79.99 USD
Free Shipping on orders $49 and up
$ 79.99 USD
Free Shipping on orders $49 and up
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.

WPC Performance Rod Bearing Replacement Kit - Late S54 - DRY ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:36811826
Part#: 11137834886JRKT
In Stock
Sale - Save 8% $ 730.99

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

$ 669.68 USD
Free Shipping on orders $49 and up
Sale - Save 8%
$ 730.99

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

$ 669.68 USD
Free Shipping on orders $49 and up
Timing Chain - Upper
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Iwis - Corporate Logo
T#:362341
Part#: 11311432177
Ships in 3 Business Days
$ 39.68 USD
Free Shipping on orders $49 and up
This is the upper timing chain that connects the 2 camshaft sprockets on cars with the M50, M52, M54, S50 or S52 engines. If you need the lower timing chain that connects the crankshaft to the upper sprocket you can find it  Here

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:
1992-1998  E36 BMW  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 
2004-2006  E83 BMW  X3 2.5i X3 3.0i
2000-2006  E53 BMW  X5 3.0i
1997-2002  Z3 BMW  Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
1997-2000  Z3 BMW  Z3 M Roadster M Coupe
2003-2005  E85 BMW  Z4 2.5i Z4 3.0i 
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Camshaft Set - 288/280 12.75mm/12.50mm Lift And Vanos Hub
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:55353599
Part#: 1301805KT2
Ships in 4 Business Days
New Item
$ 5,189.99 USD
Free Shipping on orders $49 and up
The factory S54 VANOS tabs are a notorious OEM weak point turn your high-revving masterpiece into a costly paperweight.
Schrick Camshaft Set With DLC Rocker Arms - 280/272 Degree 12.5mm Lif...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:50731686
Part#: 054995LA-272KT2
Ships on Oct 27, 2026
New Item
Sale - Save 8% $ 4,392.99

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

$ 4,032.89 USD
Free Shipping on orders $49 and up
Sale - Save 8%
$ 4,392.99

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

$ 4,032.89 USD
Free Shipping on orders $49 and up

Schrick has been dedicated to engine performance through the development of only the highest quality camshafts for more than 40 years. They've created a bond with BMW enthusiasts nearly the entire time, offering options for both the street and track, using top materials for strength and accuracy. Schrick has grown into a technology center offering one of the most advanced locations for engine testing and manufacturing.

These are a direct replacement for the stock camshafts and offer increased flow at mid and higher RPMs, thanks to 12.5mm of valve lift. Unlike 288/280 camshafts, this 280/272 set does not require upgraded valvetrain parts. The profile of these camshafts is quite close to stock CSL specs.

KIT INCLUDES

Schrick 272-Degree Exhaust Camshaft Schrick 280-Degree Intake Camshaft 24 Turner Motorsport DLC-Coated Performance Rocker Arms NOTE: Camshaft replacement requires multiple special tools. We offer the Genuine BMW Camshaft Press (T#171829) and a Schwaben Camshaft Alignment Tool Set (T#395239) to aid in installation.

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Schrick Camshaft Set With DLC Rocker Arms - 288/280 Degree 12.5mm Lif...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Earn 5% back in Turner Rewards on orders placed 10/28-10/31. Redeem 11/27-12/1. Terms & conditions apply
Packaged by Turner - Corporate Logo
T#:46959286
Part#: 054995LA-288KT2
Ships on Oct 27, 2026
Sale - Save 24% $ 6,999.99

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

$ 5,354.99 USD
Free Shipping on orders $49 and up
Sale - Save 24%
$ 6,999.99

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

$ 5,354.99 USD
Free Shipping on orders $49 and up

Schrick has been dedicated to engine performance through the development of only the highest quality camshafts for more than 40 years. They've created a bond with BMW enthusiasts nearly the entire time, offering options for both the street and track using top materials for strength and accuracy. Schrick has grown into a technology center offering one of the most advanced locations for engine testing and manufacturing.

These cams are a direct replacement for the stock cams and give a solid 15+ horsepower boost at the top end and great midrange torque increases too! More gains can be expected with intake and header upgrades and custom software tuning. A slightly lumpy idle is expected at cold start, but will be smooth once at operating temperature.

These Schrick cams were initially developed for the M3 CSL, but they also work well on the US and other non-CSL S54 engines. With more duration, they are a great match to high-flow headers and CSL intake plenum upgrades.

KIT INCLUDES

Schrick 280-Degree Exhaust Camshaft Schrick 288-Degree Intake Camshaft 24 Turner Motorsport DLC-Coated Performance Rocker Arms NOTE: Camshaft replacement requires multiple special tools. We offer the Genuine BMW Camshaft Press (T#171829) and a Schwaben Camshaft Alignment Tool Set (T#395239) to aid in installation.

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