BMW Internal Engine Parts

Rein Piston Rings - Set - Single Piston - E36, Z3

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T#:591603

Part#: 11251405783

Back Ordered

$ 43.99 USD

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$ 43.99 USD

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Replace your worn out piston rings with OE replacements - 86.415mm

Oil Pump Chain - E36 E46 E34 E39 Z3 Z4

T#:14529

Part#: 11417576915

Ships in 3 Business Days

$ 45.89

This product was last offered at the strikethrough price on
08-13-2026

$ 32.99 USD

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$ 32.99 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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Rein Piston Rings - Set - Single Piston

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:592808

Part#: 11251247917

Ships in 3 Business Days

$ 36.99 USD

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$ 36.99 USD

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Replace your worn out piston rings with OE replacements - 85.065mm

Camshaft Timing Chain - E39 E38 E53 X5 with M62 V8 engine

T#:14505

Part#: 11311747437

In Stock

$ 62.99

This product was last offered at the strikethrough price on
03-02-2026

$ 34.43 USD

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$ 34.43 USD

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This is the timing chain that connects the 2 camshaft sprockets. The M62 V8 engine is known for issues with the timing system. Replace the timing chain on your BMW with this OEM part. We also recommend replacing guides and tensioners while replacing the chain. Sold individually. 2 per 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:
1997-2003 E39 BMW 540i
1996-2001 E38 BMW 740i 740il
1996-1999 E31 BMW 840i 840ci
2000-2003 E53 BMW X5 4.4i X5 4.6is

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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.

Rein Piston Ring - Priced Per Piston - E28, E30, E34, E36

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:379806

Part#: 11251713192

Ships in 2 Business Days

$ 30.99 USD

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$ 30.99 USD

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For use on stock pistons, will need 6 sets to replace all piston rings in the engine

Rein Piston Ring Set - Priced Per Piston

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:592811

Part#: 11251713178

Ships in 3 Business Days

$ 28.99 USD

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$ 28.99 USD

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Replace your worn rings - 84.000mm

Rein Piston Ring Set

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:379819

Part#: 11251437077

Ships in 3 Business Days

$ 31.99 USD

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$ 31.99 USD

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Standard bore replacement piston rings

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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Crankshaft to Camshafts Lower Timing Chain - E39 E38 E53 E31 ...

T#:14503

Part#: 11311741746

In Stock

$ 97.72

This product was last offered at the strikethrough price on
07-16-2026

$ 88.99 USD

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$ 88.99 USD

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This is the timing chain that connects the crankshaft to the camshafts. The M62 V8 engine is known for issues with the timing system. Replace the timing chain on your BMW with this OEM part. We also recommend replacing guides and tensioners while replacing the chain.

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:
1997-2003 E39 BMW 540i
1996-2001 E38 BMW 740i 740il
1996-1999 E31 BMW 840i 840ci
2000-2003 E53 BMW X5 4.4i X5 4.6is

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Rein Piston Rings - Set - Single Piston - E30, E36

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:591604

Part#: 11251727461

Ships in 3 Business Days

$ 31.99 USD

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$ 31.99 USD

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Replace your worn out piston rings with OE replacements - 84.000mm

Timing Chain - Upper

T#:362341

Part#: 11311432177

In Stock

$ 45.92 USD

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$ 45.92 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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Rein Exhaust Valve - E34, E36, E39, E46, Z3

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:379738

Part#: 11341739823

Ships on Sep 1, 2026

$ 20.99 USD

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$ 20.99 USD

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Replacement exhaust valve

Rein Exhaust Valve - Sold Each - E28, E30, E34

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:584424

Part#: 11341708896

In Stock

Sale - Save 9% $ 18.35

This product was last offered at the strikethrough price on
05-14-2026

$ 16.65 USD

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Sale - Save 9%

$ 18.35

This product was last offered at the strikethrough price on
05-14-2026

$ 16.65 USD

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Replace your worn valves

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!

T#:12463

Part#: 12141748398

In Stock

$ 4.99

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

$ 2.75 USD

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$ 2.75 USD

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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.

Aluminum Cylinder Head Bolt Set

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:594302

Part#: 11120392547

In Stock

$ 12.99

This product was last offered at the strikethrough price on
08-13-2026

$ 7.89 USD

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$ 7.89 USD

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If you remove your cylinder head replacement head bolts are a must. These bolts are designed to be torqued down and not reused.

Timing Chain - Single Row

T#:578660

Part#: 11311716987

In Stock at Vendor

$ 62.99

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

$ 60.99 USD

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$ 60.99 USD

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The timing chain in any vehicle can begin to stretch and rattle over time. This is a common issue, and though BMW says it is a lifetime part, most enthusiasts decide to change them. If you need only the timing chain instead of a kit, ECS Tuning has your replacement. This is a direct fit replacement for any broken or stretched chain. A great replacement to a damaged chain or one that may have been misplaced out of a timing belt kit.

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OEM Rein Rocker Arm Shaft Plug - E28 E30 E34

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:583592

Part#: 11331264519

In Stock at Vendor

$ 6.11 USD

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$ 6.11 USD

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This is an OEM Rein replacement rocker arm shaft plug, also referred to by BMW as a Blind Plug. This plug connects to the end of the rocker arm shafts. 4 required per vehicle. Replace your old plugs to keep everything properly sealed.

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Rein Alusil Piston Ring Repair Kit - E38, E39, E53

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:591608

Part#: 11259071606

Ships in 3 Business Days

$ 37.99 USD

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$ 37.99 USD

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Set of rings for one piston

Piston Ring - Priced Per Piston | BMW M54 3.0L Engine

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:591606

Part#: 11257506252

Ships in 3 Business Days

$ 48.99 USD

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$ 48.99 USD

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Piston Ring - Priced Per Piston | BMW M54 3.0L Engine is a vital component in maintaining proper compression and oil control in BMW M54 3.0L engines. Over time, piston rings experience wear from continuous movement within the cylinder bore, leading to decreased engine efficiency. Worn or damaged rings can result in excessive oil consumption, reduced performance, and visible black or blue smoke from the exhaust. Ideal for engine rebuilds, this high-quality replacement ensures optimal sealing and longevity.

Restores proper compression and oil control for improved engine performance
Reduces oil consumption and minimizes exhaust smoke
Direct-fit replacement for BMW M54 3.0L engine pistons
Manufactured from high-strength materials for durability and longevity
Essential for engine rebuilds and maintaining peak efficiency
Designed to withstand high temperatures and pressures for reliable operation

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Timing Chain - E30 E32 E34

T#:4468

Part#: 11311716986

Ships in 2 Business Days

$ 47.17 USD

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$ 47.17 USD

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This single row timing chain is used on many BMW's from 1979 on. If you are rebuilding your engine we recommend replacing the timing chain.

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:
1979-1983 E21 BMW 320i 323i
1984-1985 E30 BMW 318i
1979-1981 E12 BMW 528i 530i
1985-1988 E28 BMW 533i 535i 535is
1989-1995 E34 BMW 535i
1979-1989 E24 BMW 633csi 635csi
1979-1987 E23 BMW 733i 735i
1988-1993 E32 BMW 735i 735il

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Timing Chain - Oil Pump

T#:591278

Part#: 13528648731

Ships in 1-2 days

$ 39.99

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

$ 38.99 USD

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$ 38.99 USD

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Sub-Categories

Rein Piston Rings - Set - Single Piston - E36, Z3

Oil Pump Chain - E36 E46 E34 E39 Z3 Z4

Rein Piston Rings - Set - Single Piston

Camshaft Timing Chain - E39 E38 E53 X5 with M62 V8 engine

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

Rein Piston Ring - Priced Per Piston - E28, E30, E34, E36

Rein Piston Ring Set - Priced Per Piston

Rein Piston Ring Set

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

Crankshaft to Camshafts Lower Timing Chain - E39 E38 E53 E31 ...

Rein Piston Rings - Set - Single Piston - E30, E36

Timing Chain - Upper

Rein Exhaust Valve - E34, E36, E39, E46, Z3

Rein Exhaust Valve - Sold Each - E28, E30, E34

OEM Rein Camshaft / Crankshaft Sensor O-Ring - Multiple BMWs ...

Aluminum Cylinder Head Bolt Set

Timing Chain - Single Row

OEM Rein Rocker Arm Shaft Plug - E28 E30 E34

Rein Alusil Piston Ring Repair Kit - E38, E39, E53

Piston Ring - Priced Per Piston | BMW M54 3.0L Engine

Timing Chain - E30 E32 E34

Timing Chain - Oil Pump

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