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Bav Auto Tools BMW Drivetrain Parts for BMW F85 X5 M S63 4.4L

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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 ...

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T#:580353

Part#: B8800025

Ships in 8 Business Days

Sale - Save 30% $ 32.99

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05-03-2026

$ 23.09 USD

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The proper size for removing BMW drain plugs.

Differential Fluid Extraction Adapter

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T#:578659

Part#: B3300000

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05-03-2026

$ 21.33 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

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T#:580446

Part#: B8800141

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05-03-2026

$ 25.89 USD

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$ 36.99

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$ 25.89 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 Axle Shaft Impact Force Screw Adapter

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T#:580429

Part#: B8800122

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Sale - Save 10% $ 40.99

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05-03-2026

$ 36.89 USD

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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

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T#:580427

Part#: B8800120

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Sale - Save 10% $ 109.99

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05-03-2026

$ 98.99 USD

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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 Fluid Transfer Pump - 1 Liter - Viton Seals

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T#:580335

Part#: B8800003

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Sale - Save 15% $ 60.99

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05-03-2026

$ 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 Hub and Rotor Grinding Kit

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T#:580437

Part#: B8800132

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Sale - Save 10% $ 47.99

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05-03-2026

$ 43.19 USD

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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 Fluid Transfer Pump - 200ml - Viton Seals

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T#:580336

Part#: B8800004

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Sale - Save 25% $ 38.99

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05-03-2026

$ 29.24 USD

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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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Bav Auto Wheel Bearing Tool Master Set

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T#:580402

Part#: B8800092

Ships on Aug 10, 2026

Sale - Save 5% $ 355.99

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

$ 338.19 USD

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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

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T#:580421

Part#: B8800114

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$ 20.99 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.

Bav Auto Hub Puller Slide Hammer Adapter

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T#:580428

Part#: B8800121

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Sale - Save 20% $ 21.99

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05-03-2026

$ 17.59 USD

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$ 17.59 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 ...

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T#:580447

Part#: B8800142

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05-03-2026

$ 13.99 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.

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