BMW Drivetrain Parts for BMW 5 Series E34 (1987-1995)

Differential Input Shaft Seal - Priced Each

T#:44021076

Part#: 33121213949

In Stock at Vendor

$ 27.99

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

$ 26.99 USD

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E34 M5 JB Racing Lightweight Aluminum Flywheel

T#:3772

Part#: 520-090-240

Ships in 4 Business Days

$ 581.00 USD

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$ 581.00 USD

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Aluminum flywheels are much lighter than the stock steel flywheel and that produces better throttle response and more available horsepower to the wheels for faster acceleration. The JB Racing aluminum flywheels are a direct replacement for the stock flywheel and work with stock clutch components for an easy upgrade with very little downside.

Modern flywheels are built with additional components and features that are designed to dampen and minimize vibrations from the engine and transmission. As a result they have become bloated in weight and that means more energy is used up just making the flywheel spin. The weight difference between an aluminum and steel flywheel is huge - sometimes more than 50% less. Without the additional mass, more energy can be diverted to where it counts most - moving the car. The flywheel and clutch is one of the first areas that engine builders address when making the rotating assembly lighter for race engines. The dampening effect is just not needed on cars that are focused on performance.

In addition to releasing more power to the wheels, the lighter flywheel allows the engine to spin more freely, which improves throttle response. Again, the difference is huge as you watch the revs build faster than before. With the engine spinning easier the power band comes up much sooner. The stock steel flywheel feels lazy in comparison. There is a driving adjustment required to get used to how much faster the engine revs but that's not really a downside.

The JB lightweight flywheel is designed to be used with a factory organic clutch - the same clutch kit that you would get from any BMW dealer. This makes replacement clutch components easy to source and inexpensive when compared to specialized racing clutches. By using the factory BMW clutch, JB has also made the whole assembly easy to live with when used on the street. The clutch behaves the same as it originally did - just with better throttle response and more power! The JB flywheel can also be rebuilt with a new clutch contact surface - you don't have to buy a new flywheel.

Aluminum flywheels are considered 'single-mass' flywheels because they do not have the same dampening designs as an original 'dual-mass' flywheel. With a single-mass design more noise and vibration may be noticeable.

Stock Flywheel Weight = 16.0lbs
JB Flywheel Weight = 8.0lbs

This item fits the following BMWs:
1991-1995 E34 BMW M5

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E30 325i, E34 525i (M20) JB Racing Lightweight Aluminum Flywheel (Rep...

T#:385699

Part#: 520-060-228

Ships on Aug 5, 2026

$ 581.00 USD

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$ 581.00 USD

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Aluminum flywheels are much lighter than the stock steel flywheel and that produces better throttle response and more available horsepower to the wheels for faster acceleration. The JB Racing aluminum flywheels are a direct replacement for the stock flywheel and work with stock clutch components for an easy upgrade with very little downside.

Modern flywheels are built with additional components and features that are designed to dampen and minimize vibrations from the engine and transmission. As a result they have become bloated in weight and that means more energy is used up just making the flywheel spin. The weight difference between an aluminum and steel flywheel is huge - sometimes more than 50% less. Without the additional mass, more energy can be diverted to where it counts most - moving the car. The flywheel and clutch is one of the first areas that engine builders address when making the rotating assembly lighter for race engines. The dampening effect is just not needed on cars that are focused on performance.

In addition to releasing more power to the wheels, the lighter flywheel allows the engine to spin more freely, which improves throttle response. Again, the difference is huge as you watch the revs build faster than before. With the engine spinning easier the power band comes up much sooner. The stock steel flywheel feels lazy in comparison. There is a driving adjustment required to get used to how much faster the engine revs but that's not really a downside.

The JB lightweight flywheel is designed to be used with a factory organic clutch - the same clutch kit that you would get from any BMW dealer. This makes replacement clutch components easy to source and inexpensive when compared to specialized racing clutches. By using the factory BMW clutch, JB has also made the whole assembly easy to live with when used on the street. The clutch behaves the same as it originally did - just with better throttle response and more power! The JB flywheel can also be rebuilt with a new clutch contact surface - you don't have to buy a new flywheel.

Aluminum flywheels are considered 'single-mass' flywheels because they do not have the same dampening designs as an original 'dual-mass' flywheel. With a single-mass design more noise and vibration may be noticeable. There are steps you can take to minimize the noise - heavier weight transmission oil and clutch discs with anti-rattle springs (sprung-hub clutch).

This flywheel replaces the stock original single-mass flywheel and should only be used with the corresponding 'single-mass' clutch kit. According to BMW the single mass flywheel was installed in all 325i up to 12/86 production date but we have seen some later cars with a single-mass flywheel. The age of the car almost guarantees one or more clutch replacements and possibly a change to the original flywheel as well. You may not know which flywheel is currently installed until the flywheel cover or the transmission is removed.

Stock Flywheel Weight = 18.0lbs
JB Flywheel Weight = 8.0lbs

This item fits the following BMWs:
1984-1991 E30 BMW 325i 325ic 325is (with single-mass flywheel)
1989-1990 E34 BMW 525i (with single-mass flywheel)

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Corteco Transmission Mount - E32, E34, E39

For vehicles with manual transmission only

T#:371825

Part#: 22316771221

Ships in 1 Business Day

$ 23.99 USD

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Stop driveline vibration

E34 535i JB Racing Lightweight Aluminum Flywheel

T#:647

Part#: 520-170-240

Ships in 1 Business Day

$ 714.00 USD

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$ 714.00 USD

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Aluminum flywheels are much lighter than the stock steel flywheel and that produces better throttle response and more available horsepower to the wheels for faster acceleration. The JB Racing aluminum flywheels are a direct replacement for the stock flywheel and work with stock clutch components for an easy upgrade with very little downside.

Modern flywheels are built with additional components and features that are designed to dampen and minimize vibrations from the engine and transmission. As a result they have become bloated in weight and that means more energy is used up just making the flywheel spin. The weight difference between an aluminum and steel flywheel is huge - sometimes more than 50% less. Without the additional mass, more energy can be diverted to where it counts most - moving the car. The flywheel and clutch is one of the first areas that engine builders address when making the rotating assembly lighter for race engines. The dampening effect is just not needed on cars that are focused on performance.

In addition to releasing more power to the wheels, the lighter flywheel allows the engine to spin more freely, which improves throttle response. Again, the difference is huge as you watch the revs build faster than before. With the engine spinning easier the power band comes up much sooner. The stock steel flywheel feels lazy in comparison. There is a driving adjustment required to get used to how much faster the engine revs but that's not really a downside.

The JB lightweight flywheel is designed to be used with a factory organic clutch - the same clutch kit that you would get from any BMW dealer. This makes replacement clutch components easy to source and inexpensive when compared to specialized racing clutches. By using the factory BMW clutch, JB has also made the whole assembly easy to live with when used on the street. The clutch behaves the same as it originally did - just with better throttle response and more power! The JB flywheel can also be rebuilt with a new clutch contact surface - you don't have to buy a new flywheel.

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Corteco Selector Rod Shaft Seal

T#:585859

Part#: 24147571213

In Stock

$ 10.99 USD

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Sealing ring for the transmission gear selector rod Fits the following transmissions: GA6HP19 GA6HP19Z GA6HP26Z A5S325Z A5S310Z A5S440Z A5S560Z ZF 4HP22/24 ZF 4HP22/24-EH ZF 3HP22

Transmission Output Seal - E46 M3, E39 540i, M5, E60 M5, E63 M6 ...

T#:19676

Part#: 23121222769

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$ 11.71 USD

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This is the OEM transmission rear output seal for cars with the S6S420G or GS7S47BG transmissions. It is a good idea to replace all the seals on the transmission whenever replacing a clutch as it is much easier to do while the transmission is down off the car and these seals commonly develop leaks over time. This seal works with either the manual transmission or the SMG transmission.

This item fits the following BMWs:
2001-2006 E46 BMW M3
1993-1995 E34 BMW 540i
1997-2003 E39 BMW 540i M5
2006-2010 E60 BMW M5
2006-2010 E63 BMW M6

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Corteco Transmission Mount - E31, E32, E34

T#:592093

Part#: 23701141614

Ships in 1 Business Day

$ 12.99 USD

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$ 12.99 USD

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Secure the rear of the transmission to the crossmember

Corteco Manual Transmission Input Shaft Seal - Multiple BMWs ...

T#:641768

Part#: 23121220619

Ships in 1 Business Day

$ 10.99 USD

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$ 10.99 USD

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This is the transmission input shaft seal for cars with the Getrag 260/5/50, 260/6, 265/6, 280, transmissions

Corteco Transmission Mount - Left - E34, E36

T#:369634

Part#: 24701138427

Ships in 1 day

$ 17.99

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

$ 17.00 USD

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$ 17.00 USD

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located on the transmission cross member

Output Shaft Oil Seal

T#:593697

Part#: 01033864B

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$ 9.26 USD

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$ 9.26 USD

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A worn out output shaft seal can let transmission fluid leak around it and let debris into the transmission possibly shortening its life.

Engine Mount - Right

T#:594932

Part#: 11811094150

Back Ordered

$ 55.99 USD

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$ 55.99 USD

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Excessive driveline vibration is caused by one of a few things, but more than likely, it is the mounts in your vehicle. They keep your engine and transmission secure for more positive shifting and driveline triangulation as well as absorbing vibration. If any of these are occurring in your BMW, it's time to examine your mounts.

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BMW Drivetrain Parts for BMW 5 Series E34 (1987-1995)

Sub-Categories

Differential Input Shaft Seal - Priced Each

E34 M5 JB Racing Lightweight Aluminum Flywheel

E30 325i, E34 525i (M20) JB Racing Lightweight Aluminum Flywheel (Rep...

Corteco Transmission Mount - E32, E34, E39

E34 535i JB Racing Lightweight Aluminum Flywheel

Corteco Selector Rod Shaft Seal

Transmission Output Seal - E46 M3, E39 540i, M5, E60 M5, E63 M6 ...

Corteco Transmission Mount - E31, E32, E34

Corteco Manual Transmission Input Shaft Seal - Multiple BMWs ...

Corteco Transmission Mount - Left - E34, E36

Output Shaft Oil Seal

Engine Mount - Right

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