BMW Internal Engine Parts for BMW 5 Series E34 (1987-1995)

Supertech Upgraded Valve Stem Seal Kit - BMW S54 S52 S50 M54 M52 M50 ...

T#:641030

Part#: VS-VBM6-6CYLKT

In Stock

$ 27.99 USD

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Includes a full set of polyacrylic intake and viton exhaust valve stem seals! Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 8.8mm/.347" Seal OD: 12.2mm/.480"

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Supertech Performance Exhaust Valve - BMW M50 M52

T#:640219

Part#: BMEVN-1030S

Ships in 8 Business Days

$ 29.99 USD

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$ 29.99 USD

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Supertech valves are some of the best on the market, made from one piece of forged stainless steel for the ultimate in strength and durability. Supertech valves go through a special heat treatment process that obtains the right amount of harness for each engine to ensure the ultimate valve for your performance motor. These valves are hardened black nitrided, which is most popular in European and Japanese motors.

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Supertech Performance Intake Valve - BMW M50 M52

T#:302459

Part#: BMIVN-1030

Ships in 8 Business Days

$ 32.99 USD

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$ 32.99 USD

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Supertech valves are some of the best on the market, made from one piece of forged stainless steel for the ultimate in strength and durability. Supertech valves go through a special heat treatment process that obtains the right amount of harness for each engine to ensure the ultimate valve for your performance motor. These valves are hardened black nitrided, which is most popular in European and Japanese motors.

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Glyco Connecting Rod Bearing Set

T#:375825

Part#: 11241284849

Ships in 1 Business Day

$ 92.02

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

$ 84.36 USD

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$ 84.36 USD

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Standard bore - 45mm

Rod Bearing - E30 M3, E28 M5, E24 M6, E34 M5 (sold individually) ...

T#:183

Part#: 11241310515

In Stock

$ 30.59

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

$ 27.99 USD

Limited Qty Sale

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$ 30.59

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

$ 27.99 USD

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E30 M3, E28 M5, E24 M6, E34 M5 Rod Bearing. Sold individually. Standard sizing.

This item fits the following BMWs
1988-1991 BMW E30 M3 - 8 required.
1988 BMW E28 M5 - 12 required.
1989-1993 BMW E34 M5 3.6 liter - 12 required.
1987-1989 BMW E24 M6 - 12 required.

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Oil Pump Chain - E36 E46 E34 E39 Z3 Z4

T#:14529

Part#: 11417576915

In Stock

$ 45.89 USD

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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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Glyco "Yellow" Crankshaft Bearing Shell - Set - E28, E30, E34, E36, E...

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

SuperTech Dual Valve Spring Upgrade Kit w/ Steel Retainers - 80lbs - ...

T#:26038568

Part#: SPRKH1000DBMST

In Stock at Vendor

20% off MSRP $ 1,042.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 833.99 USD

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20% off MSRP

$ 1,042.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 833.99 USD

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Crafted from premium Superclean Chrome Silicon Vanadium Steel alloy, these valve springs offer exceptional performance and durability even at high RPMs. CAD engineering ensures that the wire stress levels remain within defined limits for long-lasting durability, even under extreme racing conditions. Advanced computer software allows Supertech to meticulously control harmonics, ensuring optimal performance. Manufactured with high-quality military-certified Steel, the retainers are CNC machined to provide a precise fit, guaranteeing longevity and reliability.

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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.

BMW M42 M50 M52 M54 6mm Single Groove Valve Keeper - Set Of 24 ...

T#:21604313

Part#: KPR-6S-7-24

Ships in 6 Business Days

$ 51.99 USD

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$ 51.99 USD

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BMW M42 M50 M52 M54 6mm Single Groove Valve Keeper is a precision-engineered component essential for securing valves in BMW engines. Turner Motorsport offers this high-quality valve keeper, designed to fit specific Supertech valves for enhanced performance and reliability.

Precision Fit: Designed specifically for BMW M42, M50, M52, and M54 engines, ensuring a perfect fit with 6.0mm single groove valves.
High-Quality Construction: Made from durable materials to withstand high-pressure conditions and provide long-lasting performance.
Enhanced Valve Security: Two keepers are required per valve to securely hold the valve in place, preventing movement and ensuring consistent engine performance.
Compatibility: Ideal for use with certain Supertech valves, providing a reliable solution for engine builds and upgrades.
Easy Installation: Simple to install with standard tools, offering a hassle-free upgrade or replacement option.

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Supertech Black Nitrided Intake Valve - +1mm Oversize - Set Of 12 - B...

T#:8549425

Part#: BMIVN-1031S-12

In Stock

$ 384.99

This product was last offered at the strikethrough price on
06-03-2026

$ 347.99 USD

Limited Qty Sale

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$ 384.99

This product was last offered at the strikethrough price on
06-03-2026

$ 347.99 USD

Limited Qty Sale

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Upgraded valves designed for high horsepower applications! Our valves are not finished from generic blanks rather they are specifically designed for each and every application. We work relentlessly, testing and researching every aspect trying to improve the air flow of our designs. With every valve design, we strive to maximize durability through higher fatigue resistance and tensile strength. Each valve tip is hardened beyond 52HRc. It’s unlikely you will find any of our competitor’s valves with stricter dimensional tolerances than our Supertech valves. Combine that with finished seats with equally strict run out tolerances and you won’t find a better sealing, better performing and easier to install solution anywhere! Optimum high flow rates are achieved by ensuring that our valves are manufactured with the best angles for each application. We consider back cut, under cut and valve head angles for each application to produce the optimum high flow rates for each application. In 2006 we introduced our stem Superfinishing as a standard addition to all of our valves at no additional cost. When our Superfinish is combined with our Black Nitrided valve, it reduces the surface roughness to 1/3 of our chrome coated valve. The end result… unsurpassed performance and durability. Our intake valves are made exclusively from an enhanced versions of EV8 (21-4N) steel. Black Nitride Coating: This is a hardening treatment that has been steadily growing in popularity over the last several years. These black Nitride coated valves feature harder surfaces and smoother finishes, providing less friction and subsequently longer life. Please see below for more benefits of our Black Nitride valves. Black Nitride Coating Head Diam: 33mm Material: Stainless Steel 21-4N Groove Type: Triple Groove Length: 123.7mm Stem Diam: 6.95mm

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SuperTech Black Nitrided Exhaust Valve - +1mm Oversize - Single Valv...

T#:640986

Part#: BMEVN-1031S

Ships in 8 Business Days

$ 23.99 USD

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$ 23.99 USD

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Upgraded valves designed for high horsepower applications! Our valves are not finished from generic blanks rather they are specifically designed for each and every application. We work relentlessly, testing and researching every aspect trying to improve the air flow of our designs. With every valve design, we strive to maximize durability through higher fatigue resistance and tensile strength. Each valve tip is hardened beyond 52HRc. It’s unlikely you will find any of our competitor’s valves with stricter dimensional tolerances than our Supertech valves. Combine that with finished seats with equally strict run out tolerances and you won’t find a better sealing, better performing and easier to install solution anywhere! Optimum high flow rates are achieved by ensuring that our valves are manufactured with the best angles for each application. We consider back cut, under cut and valve head angles for each application to produce the optimum high flow rates for each application. In 2006 we introduced our stem Superfinishing as a standard addition to all of our valves at no additional cost. When our Superfinish is combined with our Black Nitrided valve, it reduces the surface roughness to 1/3 of our chrome coated valve. The end result… unsurpassed performance and durability. Our exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for greater strength at higher temperatures. Black Nitride Coating: This is a hardening treatment that has been steadily growing in popularity over the last several years. These black Nitride coated valves feature harder surfaces and smoother finishes, providing less friction and subsequently longer life. Please see below for more benefits of our Black Nitride valves. Head Diam: 31.50mm Material: Black Nitride Groove Type: Single Groove Length: 105.65mm Stem Diam: 5.95mm Size: 1mm+

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Glyco "Yellow" Crankshaft Bearing Shell - Set - E30, E36, E39, E46, E...

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

Supertech Black Nitrided Exhaust Valve - Set Of 12 - BMW M50/M52/S50/...

For vehicles equipped with the M50TU engine, will not fit vehicles equipped with the M5...

T#:8549426

Part#: BMEVN-1030-12

In Stock at Vendor

$ 358.99 USD

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$ 358.99 USD

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Upgraded valves designed for high horsepower applications! Our valves are not finished from generic blanks rather they are specifically designed for each and every application. We work relentlessly, testing and researching every aspect trying to improve the air flow of our designs. With every valve design, we strive to maximize durability through higher fatigue resistance and tensile strength. Each valve tip is hardened beyond 52HRc. It’s unlikely you will find any of our competitor’s valves with stricter dimensional tolerances than our Supertech valves. Combine that with finished seats with equally strict run out tolerances and you won’t find a better sealing, better performing and easier to install solution anywhere! Optimum high flow rates are achieved by ensuring that our valves are manufactured with the best angles for each application. We consider back cut, under cut and valve head angles for each application to produce the optimum high flow rates for each application. In 2006 we introduced our stem Superfinishing as a standard addition to all of our valves at no additional cost. When our Superfinish is combined with our Black Nitrided valve, it reduces the surface roughness to 1/3 of our chrome coated valve. The end result… unsurpassed performance and durability. Our exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for greater strength at higher temperatures. Black Nitride Coating: This is a hardening treatment that has been steadily growing in popularity over the last several years. These black Nitride coated valves feature harder surfaces and smoother finishes, providing less friction and subsequently longer life. Please see below for more benefits of our Black Nitride valves. Black Nitride Coating Head Diam: 30.50mm Material: Black Nitride Groove Type: Triple Groove Length: 105.65mm Stem Diam: 5.95mm Size: Std

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Supertech Triple Groove Valve Locks - Set Of 24 - BMW M50 2.5L, S50 3...

T#:8549424

Part#: KPR-VW6-T-24

In Stock at Vendor

$ 45.99 USD

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$ 45.99 USD

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Upgraded valve locks from Supertech - features a triple groove for compatible intake and exhaust valves.

Supertech BMW M50/M52/S50/S52 Inconel Exhaust Valve - Set Of 12 ...

T#:9126167

Part#: BMEVI-1030S-12

In Stock at Vendor

$ 562.99 USD

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$ 562.99 USD

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The exhaust valves in your vehicle allow the exhaust port to be sealed during the combustion process, so that the engine can run at top efficiency. If the timing belt or lifter breaks, this can cause the piston to come in contact with the valve and bend or break it, causing an improper seal. This will cause a rough idle, misfires, and a check engine light condition. Be sure to replace your bent or broken valve today and keep your engine running strong.

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Supertech BMW M50/M52/S50/S52 Black Nitrided Intake Valve - Set Of 12...

T#:9126168

Part#: BMIVN-1030S-12

In Stock at Vendor

$ 384.99 USD

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$ 384.99 USD

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Generally, an intake valve is the name for a valve that allows air or fluid to pass through it, typically during the intake phase of an engine's operation. In your car, the intake valves allow an air and fuel mixture into the engine's cylinders where it can then be compressed. The valves shut during the compression phase and the spark plug ignites the air and fuel mixture, creating a force that propels the car forward. If these valves aren’t working properly, the engine will create less power and it can damage the engine over time.

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Timing Chain - Upper

T#:362341

Part#: 11311432177

Ships in 3 Business Days

$ 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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SuperTech Black Nitrided Exhaust Valve - +1mm Oversize - Set Of 12 -...

T#:11857222

Part#: BMEVN-1031S-12

Ships in 8 Business Days

$ 322.99 USD

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$ 322.99 USD

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Upgraded valves designed for high horsepower applications! Our valves are not finished from generic blanks rather they are specifically designed for each and every application. We work relentlessly, testing and researching every aspect trying to improve the air flow of our designs. With every valve design, we strive to maximize durability through higher fatigue resistance and tensile strength. Each valve tip is hardened beyond 52HRc. It’s unlikely you will find any of our competitor’s valves with stricter dimensional tolerances than our Supertech valves. Combine that with finished seats with equally strict run out tolerances and you won’t find a better sealing, better performing and easier to install solution anywhere! Optimum high flow rates are achieved by ensuring that our valves are manufactured with the best angles for each application. We consider back cut, under cut and valve head angles for each application to produce the optimum high flow rates for each application. In 2006 we introduced our stem Superfinishing as a standard addition to all of our valves at no additional cost. When our Superfinish is combined with our Black Nitrided valve, it reduces the surface roughness to 1/3 of our chrome coated valve. The end result… unsurpassed performance and durability. Our exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for greater strength at higher temperatures. Black Nitride Coating: This is a hardening treatment that has been steadily growing in popularity over the last several years. These black Nitride coated valves feature harder surfaces and smoother finishes, providing less friction and subsequently longer life. Please see below for more benefits of our Black Nitride valves. Head Diam: 31.50mm Material: Black Nitride Groove Type: Single Groove Length: 105.65mm Stem Diam: 5.95mm Size: 1mm+

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Supertech Upgraded Valve Stem Seal Kit - BMW S38 3.5L 3.6L

T#:641032

Part#: VS-VW7-S38KT

Ships in 8 Business Days

$ 177.99 USD

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$ 177.99 USD

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Includes a full set of polyacrylic intake and viton exhaust valve stem seals! Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 9.8mm/.385" Seal OD: 13.2mm/.520"

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Supertech BMW M50/M52/S50/S52 Dual Valve Spring Kit

T#:9126166

Part#: PRK-H1000D-BM

Ships on Aug 6, 2026

$ 763.99 USD

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$ 763.99 USD

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Supertech 6mm Intake Valve Stem Seal - Polyacrylic - BMW S54 S52 S50 ...

T#:641011

Part#: VS-VBM6I

In Stock

$ 1.99 USD

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Qty

$ 1.99 USD

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Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 8.8mm/.347" Seal OD: 12.2mm/.480"

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Single Groove Valve Keeper 6mm - Priced Each

T#:3268708

Part#: KPR-6S-7

In Stock

$ 5.99

This product was last offered at the strikethrough price on
03-04-2026

$ 2.99 USD

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$ 2.99 USD

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Two required per valve, for use with certain supertech valves 6.0mm single groove

Supertech 6mm Exhaust Valve Stem Seal - Viton - BMW S54 S52 S50 M54 M...

T#:641010

Part#: VS-VBM6E

In Stock

$ 1.99 USD

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$ 1.99 USD

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Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 8.8mm/.347" Seal OD: 12.2mm/.480"

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Glyco Connecting Rod Bushing - E12, E21, E23, E24, E28, E3, E30, E32,...

T#:187165

Part#: 11240618100

In Stock at Vendor

$ 12.99 USD

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$ 12.99 USD

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OEM BMW Connecting Rod Bush

Glyco Connecting Rod Bushing

T#:374292

Part#: 11241278209

Ships in 1 Business Day

$ 6.11 USD

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$ 6.11 USD

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Press fit into small journal of connecting rod

Timing Chain - E30 E32 E34

T#:4468

Part#: 11311716986

In Stock at Vendor

$ 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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Rod Bearing Set - Standard (48.00 Mm)

T#:55821723

Part#: 11241715701

In Stock at Vendor

$ 149.99

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

$ 137.99 USD

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$ 137.99 USD

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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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SuperTech Dual Valve Spring Upgrade Kit w/ Steel Retainers - 67lbs - ...

T#:51426477

Part#: SPRKH100DRBMST

Back Ordered

$ 833.99 USD

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$ 833.99 USD

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Crafted from premium Superclean Chrome Silicon Vanadium Steel alloy, these valve springs offer exceptional performance and durability even at high RPMs. CAD engineering ensures that the wire stress levels remain within defined limits for long-lasting durability, even under extreme racing conditions. Advanced computer software allows Supertech to meticulously control harmonics, ensuring optimal performance. Manufactured with high-quality military-certified Steel, the retainers are CNC machined to provide a precise fit, guaranteeing longevity and reliability.

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Main Bearing Set (Standard)

T#:55857747

Part#: 11211725917

In Stock at Vendor

$ 90.99

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

$ 85.99 USD

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$ 85.99 USD

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Supertech 7mm Intake Valve Stem Seal - Polyacrylic - BMW S14 S38 ...

T#:641013

Part#: VS-VW7I

Ships in 4 Business Days

$ 0.99 USD

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Qty

$ 0.99 USD

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Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 9.8mm/.385" Seal OD: 13.2mm/.520"

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