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

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Building your perfect BMW is more than just adding horsepower and stiff suspension. Your drivetrain needs attention in order to deliver power effectively. Most BMWs feature comfortable clutch discs, heavy flywheels, long shifter throws, and open differentials. The drivetrain transmits power to the wheels, but can also be a source of power loss when it is designed for comfort rather than performance. Everything on this page will help you improve your power delivery and driving experience by providing custom Limited Slip Differentials, Short Shift Conversions, Performance Clutch Discs, Lightweight Flywheels, and anything else your BMW needs to be the perfect driving experience.

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OEM Rein Magnetic Differential Oil Drain Plug - M22x1.5 - Most BMW & ...

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T#:38890943

Part#: HWU0065

In Stock

$ 23.99 USD

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$ 23.99 USD

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As components in the differential begin to wear, metal particles become loose in the diff fluid, which can lead to excess wear. This magnetic plug pulls these particles out of suspension, helping to reduce wear over time. Replaces BMW # 33117525064

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Rein Driveshaft Center Mount - E30, E32, E34

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T#:375738

Part#: 26121226723

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$ 43.99 USD

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$ 43.99 USD

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Used to support the center of the driveshaft

Rubber Mounting 22316771221

For vehicles with manual transmission only

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T#:20746

Part#: 22316771221

Ships in 1 Business Day

$ 22.99 USD

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$ 22.99 USD

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RUBBER MOUNTING 22316771221

Engine Mount - Left

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T#:379691

Part#: 11811094149

In Stock

$ 64.99

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

$ 54.99 USD

Limited Qty Sale

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$ 64.99

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

$ 54.99 USD

Limited Qty Sale

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Keep your engine secure.

Differential And LSD Tune

T#:34382136

Part#: BM237HAKT

Ships in 2 Business Days

$ 2,100.00 USD

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$ 2,100.00 USD

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Upgrade to a better performing LSD, includes tune.

E46 M3, E9X M3, E34 M5, E39 M5, Z4 M OS Giken Super Lock Limited Slip...

T#:1387

Part#: BM237-HA

Ships in 2 Business Days

$ 1,950.00 USD

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$ 1,950.00 USD

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The M Dynamic limited slip unit on the M3 is designed to be a pure street car differential. It's simply not up to the rigors of professional or amateur racing. The OS Giken Super Lock LSD is giant step up in from a stock M3 lsd unit. It's ready for the extreme conditions of racing, offers 100% progressive locking capability, and is able to do this while operating smoothly and quietly. It's use of advanced technologies that make it perfect for both street cars AND pro race cars... and everything in between. We're excited to be carrying the OS Giken LSD unit in our performance catalog, as we've been using them in our own Championship winning M3 race cars.

OS Giken incorporated revolutionary new ideas when developing the their own limited slip diff, utilizing their accumulated racing knowledge and experience and over 4 years of development. Their design uses an unprecedented number of friction plates (up to 28 total!) for better locking force, better engagement/disengagement, and less generated heat. The end result of their efforts is the OS Giken's OS Super Lock LSD which offers incredible durability and reliability on street and track driven BMWs. The use of highest quality materials, precise machining, forged gears and sound engineering makes this LSD durable and reliable enough for road racing performance (which we can personally vouch for!). This is such a great design, in that it can be used in any situation -- whether it's for a street car, or a 100% Professional race car. Zero break-in required. Super smooth and quiet engagement, and 100% progressive locking capability. Professional installation is recommended.

This Limited Slip Differential Unit fits the following BMWs:
2001-2006 E46 M3 coupe & convertible
2008-2013 E9X M3 coupe & convertible
1991-1995 E34 M5 sedan
1999-2003 E39 M5 sedan
2006-2008 E85 Z4M Z4 M Coupe, Z4 M Roadster

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OEM Rein Engine Mount - Right - E31 E34 E32

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T#:379814

Part#: 11811094150

Ships in 3 Business Days

$ 57.99 USD

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$ 57.99 USD

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This is an OEM Rein engine mount designed to replace your old hardened or broken mount.

Differential Oil Drain Plug

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T#:27405453

Part#: 33117525064

In Stock

$ 11.99

This product was last offered at the strikethrough price on
05-21-2026

$ 9.99 USD

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$ 9.99 USD

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Rein Driveshaft Center Support Bearing

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T#:379700

Part#: 26121225071

In Stock

$ 13.50 USD

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$ 13.50 USD

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Commonly referred to as "carrier bearing"

OEM Rein Shifter Ball Bushing - Multiple BMWs

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T#:362834

Part#: 25111220600

In Stock

$ 7.57 USD

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$ 7.57 USD

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This bushing is the point where the shifter arm pivots. If you are experiencing excess play in your shifter, this could be the cause. Worn out shifter ball bushings allow too much movement from wear over time.

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OEM Rein Transmission Input Shaft Seal - E12 E21 E23 E24 E28 E30 E31 ...

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T#:379685

Part#: 24311422671

Ships in 3 Business Days

$ 10.99 USD

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$ 10.99 USD

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The input shaft seal on your transmission ensures that you will not experience any fluid loss from behind the guide sleeve. If you have a leak, be sure to replace it as soon as possible to avoid losing too much fluid, which can ultimately damage your transmission.

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Rein Transmission Input Shaft Seal - E31, E34, E39, E46, E52 ...

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T#:363449

Part#: 23127501328

Ships in 1 Business Day

$ 16.99 USD

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$ 16.99 USD

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A common source of leaks with higher mileage, this seal should be replaced any time a leak is spotted to prevent much more catastrophic repairs.

BMW Aluminum Bolt

T#:46478545

Part#: 23000417164S

In Stock at Vendor

$ 7.99 USD

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$ 7.99 USD

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This is a single-use bolt and should be replaced every time it’s removed. Don’t let a major repair come to a halt because you’re missing the proper hardware.

LSD Tune For OS Giken Differential

T#:34382134

Part#: LSD-TUNE

Ships in 2 Business Days

$ 150.00 USD

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$ 150.00 USD

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Rein Differential Drain Plug Gasket

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T#:19654

Part#: 07119963355

Ships in 3 Business Days

$ 2.03 USD

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$ 2.03 USD

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GASKET RING for various sensors and seals.

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