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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Oil Pump Chain - E36 E46 E34 E39 Z3 Z4

T#:14529

Part#: 11417576915

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$ 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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OEM IWIS Lower Timing Chain - E36, E46, E39, Z3 E60

T#:362220

Part#: 11311432176

In Stock

$ 83.99

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

$ 79.99 USD

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$ 79.99 USD

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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.

BE Bearings Connecting Rod Bearing Upgrade Set - SP1534F - BMW S54 ...

T#:403644

Part#: SP1534HKSTDS54

Ships on Oct 5, 2026

$ 399.00 USD

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$ 399.00 USD

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NOTE: These bearings are now sold as SP1534F which features a new and improved silver oxide coating that is stronger and more durable! Designed and manufactured by Clevite to BE Bearing specifications. These bearings replace the factory BMW rod bearings. The original BMW bearings have too little clearance, which leads to premature bearing wear and can cause early engine failure. Furthermore, the factory BMW bearings are made from tin-aluminum which are 5-times harder than a softer lead-copper bearing design. A softer bearing is better for your engine and more tolerant of foreign particles suspended in your oil. These BE Bearings feature a state-of-the-art Clevite Tri-Metal design with the Clevite Tri-Armor(tm) coating. Lead-copper design for greater durability and easy tracking with oil analysis like Blackstone (recommended). Designed with extra clearance to "fix" the BMW rod bearing design flaw. Designed for use with factory 10W60 weight oils. Tri-Armor coated for low conditions during cold start Ideal for start-stop vehicles Applicable for BMW engines S54 Standard size Sold as complete set (6-cylinders) Fits the following BMWs: 2002-2006 E46 BMW M3 S54 2002-2003 Z3 BMW M Coupe, M Roadster S54 2006-2008 Z4 BMW M Coupe, M Roadster S54

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Oil Pump Chain - E46 M3, Z3M Z4M with S54 engine

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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BMW S54 VAC Performance Coated Rod Bearing Kit

T#:7164819

Part#: VAC-HPRBS-S54

Ships on Sep 22, 2026

$ 479.99 USD

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$ 479.99 USD

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BMW S54 VAC Performance Coated Rod Bearing Kit is highly regarded by BMW engine builders worldwide for its superior quality and performance. Ideal for both forced induction and naturally aspirated builds, these coated bearings are designed to be friction-resistant, reducing the risk of thermal breakdowns due to inadequate lubrication. This feature significantly decreases the chances of premature engine failure in street cars and minimizes the risk of spun bearings during high-stress track conditions.

The VAC Performance Coated Rod Bearing Kit is proven to help maintain engine reliability, even in situations with reduced oil pressure.

Enhanced Durability: Coated bearings are friction-resistant, reducing the risk of thermal breakdown.
Increased Reliability: Helps prevent premature engine failure and spun bearings under stress.
Versatile Performance: Suitable for both forced induction and naturally aspirated engine builds.
Proven Track Record: Tested by customers to ensure reliable performance even with oil pressure loss.

VAC Tech Notes:

Ensure proper tolerance and size checks before installation.
Professional installation is recommended due to specialized tools required.
Returns are not available on any engine bearings.

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Timing Chain - Upper

T#:362341

Part#: 11311432177

Ships in 4 Business Days

$ 45.92

This product was last offered at the strikethrough price on
08-23-2026

$ 39.68 USD

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$ 39.68 USD

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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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JE Forged Piston Set - M54 2.5L

T#:26038609

Part#: JE-FPS-M54

Ships on Sep 22, 2026

$ 1,399.99 USD

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$ 1,399.99 USD

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

Sub-Categories

Oil Pump Chain - E36 E46 E34 E39 Z3 Z4

OEM IWIS Lower Timing Chain - E36, E46, E39, Z3 E60

BE Bearings Connecting Rod Bearing Upgrade Set - SP1534F - BMW S54 ...

Oil Pump Chain - E46 M3, Z3M Z4M with S54 engine

BMW S54 VAC Performance Coated Rod Bearing Kit

Timing Chain - Upper

JE Forged Piston Set - M54 2.5L

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