BMW Drivetrain Parts for BMW 8 Series E31 (1991-1997)

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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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Bav Auto Differential, Transfer Case, Transmission Oil-Pan Wrench
Bav Auto Differential, Transfer Case, Transmission Oil-Pan Wrench ...
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Bav Auto Tools - Corporate Logo
T#:580353
Part#: B8800025
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Sale - Save 25% $ 32.99

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$ 24.74 USD
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$ 32.99

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The proper size for removing BMW drain plugs.
Differential Fluid Extraction Adapter
Differential Fluid Extraction Adapter
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Bav Auto Tools - Corporate Logo
T#:578659
Part#: B3300000
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08-19-2026

$ 22.79 USD
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Differential Fluid Extraction Adapter is an essential tool for efficiently draining and refilling differential fluid, ensuring your vehicle's differential system remains in optimal condition. Designed to work with most extraction pumps, this adapter simplifies maintenance tasks, making it easier to service your differential without the mess or hassle of traditional methods.

  • Efficient fluid extraction: Allows for quick and clean draining of differential fluid.
  • Versatile compatibility: Works with most extraction pumps, offering flexibility for various vehicle makes and models.
  • Hassle-free maintenance: Simplifies the process of refilling and draining differential fluid, reducing time and effort.
  • Durable construction: Built from high-quality materials to withstand frequent use and harsh conditions.
  • Easy installation: Designed for a secure fit and easy attachment to extraction pumps.

This Differential Fluid Extraction Adapter is a must-have for any vehicle owner looking to maintain the longevity and performance of their differential system.

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Bav Auto Transmission/Differential Drain Plug Socket Set
Bav Auto Transmission/Differential Drain Plug Socket Set
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Bav Auto Tools - Corporate Logo
T#:580446
Part#: B8800141
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Sale - Save 25% $ 36.99

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$ 27.74 USD
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Drain plug socket set. Set of 3 hex-head sockets make removal of transmission and differential drain plugs so much easier. Includes 10mm, 14mm and 17mm sizes. 3/8" drive
Bav Auto Fluid Transfer Pump - 200ml - Viton Seals
Bav Auto Fluid Transfer Pump - 200ml - Viton Seals
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Bav Auto Tools - Corporate Logo
T#:580336
Part#: B8800004
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Sale - Save 25% $ 38.99

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$ 29.24 USD
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Use this high-quality fluid transfer pump to remove old fluid from power steering reservoirs, brake fluid reservoirs or differentials that do not have drain plugs (as on many later model BMWs), or to fill transmissions, differentials, and any other assemblies when changing the fluids.
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Clutch Slave Cylinder Bleeder Tool
Clutch Slave Cylinder Bleeder Tool
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Bav Auto Tools - Corporate Logo
T#:585675
Part#: CBTTOOL
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$ 70.42 USD
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$ 89.99

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Bleed your slave cylinder with confidence using this clutch slave cylinder bleeder tool. Get the job done right the first time and assure that your clutch pressure is appropriate. Use the tools' adjustable piston rod to apply pressure to the cylinders' piston rod, making the process much simpler.
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Bav Auto Wheel Hub and Rotor Grinding Kit
Bav Auto Wheel Hub and Rotor Grinding Kit
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Bav Auto Tools - Corporate Logo
T#:580437
Part#: B8800132
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$ 43.19 USD
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Used to remove corrosion and ensure brake rotors, wheel spacers, etc sit flush on your hubs
Bav Auto Axle Shaft Impact Force Screw Adapter
Bav Auto Axle Shaft Impact Force Screw Adapter
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Bav Auto Tools - Corporate Logo
T#:580429
Part#: B8800122
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$ 36.89 USD
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For use with B8800120 (Hub Puller Adapter) as an impact driver to aid in removal of stuck CV axle shafts.
Bav Auto Hub Adapter / Hub Puller
Bav Auto Hub Adapter / Hub Puller
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Bav Auto Tools - Corporate Logo
T#:580427
Part#: B8800120
Ships on Oct 19, 2026
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$ 98.99 USD
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For use with B8800122 impact driver to remove stuck CV axle shafts.
Bav Auto Oil Extractor - 10 Liter - Inserts Into Dip Stick Tube
Bav Auto Oil Extractor - 10 Liter - Inserts Into Dip Stick Tube ...
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Bav Auto Tools - Corporate Logo
T#:580333
Part#: B8800001
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$ 146.19 USD
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Change your oil without getting underneath the vehicle! This oil extractor pulls the oil out of your engine through the dip stick tube.
Bav Auto Fluid Transfer Pump - 1 Liter - Viton Seals
Bav Auto Fluid Transfer Pump - 1 Liter - Viton Seals
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Bav Auto Tools - Corporate Logo
T#:580335
Part#: B8800003
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$ 51.84 USD
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Use this high-quality fluid transfer pump to remove old fluid from power steering reservoirs, brake fluid reservoirs or differentials that do not have drain plugs (as on many later model BMWs), or to fill transmissions, differentials, and any other assemblies when changing the fluids. For draining differentials we recommend using the Bavarian Autosport adapter part # B3300000.
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Bav Auto Wheel Bearing Tool Master Set
Bav Auto Wheel Bearing Tool Master Set
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Bav Auto Tools - Corporate Logo
T#:580402
Part#: B8800092
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Sale - Save 5% $ 355.99

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$ 338.19 USD
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$ 355.99

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For removal and installation of pressed in rear wheel bearings on most BMW's and pressed in front wheel bearing on many all-wheel drive BMWs.
Bav Auto 36MM 12 Point Socket - 1/2" Drive
Bav Auto 36MM 12 Point Socket - 1/2" Drive
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Bav Auto Tools - Corporate Logo
T#:580421
Part#: B8800114
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$ 22.49 USD
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This is a thin-walled 1/2" drive 36mm impact socket - useful in removing or installing wheel bearing and axle nuts on several BMW models.
Clutch Alignment Tool - 10-Spline - 1 3/8" - .590" Pilot
Clutch Alignment Tool - 10-Spline - 1 3/8" - .590" Pilot
Kingsborne - Corporate Logo
T#:5424
Part#: TLS-33-25
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$ 7.99 USD
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$ 7.99 USD
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This clutch alignment tool exactly replicates the shaft and splines of the vehicle's drive shaft. It is made of high quality polypropylene injected plastics and insures perfect alignment of the clutch. Extremely durable, the clutch tool can be used over and over again. A must for anybody replacing a clutch.

This item fits the following BMWs:
onvertible
1993-1995 E34 BMW 540i
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M18 Automatic Transmission Fill Plug - BMW
M18 Automatic Transmission Fill Plug - BMW
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Bavarian Autosport - Corporate Logo
T#:22690760
Part#: 24117552349
In Stock
Sale - Save 11% $ 8.99

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$ 7.99 USD
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$ 8.99

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Fits various BMW Transmissions. Includes rubber sealing washer/o-ring.
Bav Auto Hub Puller Slide Hammer Adapter
Bav Auto Hub Puller Slide Hammer Adapter
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Bav Auto Tools - Corporate Logo
T#:580428
Part#: B8800121
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Sale - Save 18% $ 21.99

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$ 17.99 USD
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Necessary in order to use Bav Auto's Hub Adapter/Puller (B8800120) . 5/8" x 18T UNF thread.
Bav Auto Transmission 17mm Drain Plug Wrench - Manual Transmission
Bav Auto Transmission 17mm Drain Plug Wrench - Manual Transmission ...
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Bav Auto Tools - Corporate Logo
T#:580447
Part#: B8800142
In Stock
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$ 14.99 USD
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Makes changing your transmission fluid an easy task. 1/2 " drive, for use in BMWs with 17mm female allen transmission drain plugs.
CSF Universal Large Single-Pass Oil Cooler - Universal Application
CSF Universal Large Single-Pass Oil Cooler - Universal Application ...
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Universal fitment design - modifications may be necessary to run this cooler
CSF - Corporate Logo
T#:53608839
Part#: 8371
Ships in 3 Business Days
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$ 499.00 USD
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$ 499.00 USD
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CSF redesigned this cooler and went with a more traditional inlet/outlet orientation. The new single pass design features high efficiency and high durability, but with vertically oriented inlet and outlet connections.
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E31 Getrag 420g 6 Speed Conversion Shifter Carrier
E31 Getrag 420g 6 Speed Conversion Shifter Carrier
Reboot Engineering - Corporate Logo
T#:1135815
Part#: E31GETRAGCARRIER
Special Order: No Guaranteed ETA
$ 449.00 USD
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$ 449.00 USD
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This part is used when converting an E31 to a 6 speed when using a Getrag420g transmission. The part is necessary for the conversion to ensure that the shifter correctly aligns with the hole in the transmission tunnel. The machined components are constructed of 6061 Aluminum.
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