BMW Drivetrain Parts for BMW F86 X6 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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Differential Fluid Extraction Adapter
Differential Fluid Extraction Adapter
Bav Auto Tools - Corporate Logo
T#:578659
Part#: B3300000
In Stock
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05-03-2026

$ 21.33 USD
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$ 21.99

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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 Axle Shaft Impact Force Screw Adapter
Bav Auto Axle Shaft Impact Force Screw Adapter
Bav Auto Tools - Corporate Logo
T#:580429
Part#: B8800122
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Sale - Save 10% $ 40.99

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

$ 36.89 USD
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$ 40.99

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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
Bav Auto Tools - Corporate Logo
T#:580427
Part#: B8800120
In Stock
Sale - Save 10% $ 109.99

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

$ 98.99 USD
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$ 109.99

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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 Wheel Hub and Rotor Grinding Kit
Bav Auto Wheel Hub and Rotor Grinding Kit
Bav Auto Tools - Corporate Logo
T#:580437
Part#: B8800132
In Stock
Sale - Save 10% $ 47.99

This product was last offered at the strikethrough price on
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$ 43.19 USD
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$ 47.99

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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
Bav Auto Fluid Transfer Pump - 200ml - Viton Seals
Bav Auto Tools - Corporate Logo
T#:580336
Part#: B8800004
In Stock
Sale - Save 25% $ 38.99

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

$ 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
Bav Auto Wheel Bearing Tool Master Set
Bav Auto Tools - Corporate Logo
T#:580402
Part#: B8800092
Ships on Oct 19, 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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$ 355.99

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$ 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 Transmission 17mm Drain Plug Wrench - Manual Transmission
Bav Auto Transmission 17mm Drain Plug Wrench - Manual Transmission ...
Bav Auto Tools - Corporate Logo
T#:580447
Part#: B8800142
In Stock
Sale - Save 25% $ 19.99

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

$ 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.
Bav Auto 36MM 12 Point Socket - 1/2" Drive
Bav Auto 36MM 12 Point Socket - 1/2" Drive
Bav Auto Tools - Corporate Logo
T#:580421
Part#: B8800114
In Stock
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This product was last offered at the strikethrough price on
05-03-2026

$ 22.49 USD
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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.
OEM Rein Magnetic Differential Oil Drain Plug - M22x1.5 - Most BMW & Mini Models
OEM Rein Magnetic Differential Oil Drain Plug - M22x1.5 - Most BMW & ...
Rein - Corporate Logo
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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OEM Rein Transfer Case Fluid - 1 Liter - BMW
OEM Rein Transfer Case Fluid - 1 Liter - BMW
Rein - Corporate Logo
T#:20089545
Part#: 83222409710
Ships on Sep 21, 2026
$ 50.99

This product was last offered at the strikethrough price on
04-06-2026

$ 49.99 USD
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$ 49.99 USD
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Rein Transfer Case Fluid TF 0870 is designed to service your BMW xDrive transfer case, ensuring optimal performance and reliability. This genuine BMW fluid is essential for maintaining the efficiency of your transfer case, especially if you are nearing or exceeding the 60,000-mile mark. Using Rein Transfer Case Fluid TF 0870 helps to catch up on crucial maintenance and keep your vehicle running smoothly.

  • Genuine BMW Fluid: Ensures compatibility and peak performance for BMW xDrive transfer cases.
  • Optimal Performance: Helps maintain the efficiency of the transfer case, enhancing overall vehicle reliability.
  • Preventive Maintenance: Ideal for vehicles approaching or exceeding 60,000 miles to ensure continued smooth operation.
  • High-Quality Formulation: Designed to meet BMW's specifications for superior protection and longevity.
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BMW Transmission Pan Bolt - 24pc
BMW Transmission Pan Bolt - 24pc
Rein - Corporate Logo
T#:46616015
Part#: 24117519360
In Stock
$ 32.99 USD
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$ 32.99 USD
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This single-use bolt secures the transmission fluid pan to the transmission. When servicing your transmission, be sure to have enough of these bolts on hand to replace all the existing fluid pan fasteners.
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Bav Auto Hub Puller Slide Hammer Adapter
Bav Auto Hub Puller Slide Hammer Adapter
Bav Auto Tools - Corporate Logo
T#:580428
Part#: B8800121
In Stock
Sale - Save 18% $ 21.99

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

$ 17.99 USD
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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.
CV Boot Kit - Front Outer
CV Boot Kit - Front Outer
Rein - Corporate Logo
T#:593240
Part#: 31607608096
Ships in 3 Business Days
$ 27.99 USD
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$ 27.99 USD
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Bav Auto Differential, Transfer Case, Transmission Oil-Pan Wrench
Bav Auto Differential, Transfer Case, Transmission Oil-Pan Wrench ...
Bav Auto Tools - Corporate Logo
T#:580353
Part#: B8800025
In Stock
Sale - Save 25% $ 32.99

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

$ 24.74 USD
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This product was last offered at the strikethrough price on
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The proper size for removing BMW drain plugs.
Bav Auto Transmission/Differential Drain Plug Socket Set
Bav Auto Transmission/Differential Drain Plug Socket Set
Bav Auto Tools - Corporate Logo
T#:580446
Part#: B8800141
In Stock
Sale - Save 25% $ 36.99

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

$ 27.74 USD
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$ 36.99

This product was last offered at the strikethrough price on
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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 - 1 Liter - Viton Seals
Bav Auto Fluid Transfer Pump - 1 Liter - Viton Seals
Bav Auto Tools - Corporate Logo
T#:580335
Part#: B8800003
In Stock
Sale - Save 15% $ 60.99

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

$ 51.84 USD
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$ 60.99

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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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Rein OEM Transfer Case Overhaul Kit - F85 X5M, F86 X6M
Rein OEM Transfer Case Overhaul Kit - F85 X5M, F86 X6M
Rein - Corporate Logo
T#:24212288
Part#: RVK0005
Back Ordered
$ 1,086.99 USD
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$ 1,086.99 USD
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Rein OE Transfer Case Overhaul Kit is a solution kit developed to perform a complete overhaul of the xDrive transfer case. The complete kit includes bearings, clutch packs, shims, magnets, retainers, hardware, seals, and other necessary internal components. Until now, the only solution to repair these failure-prone transfer cases was to replace them with a complete assembly at the dealer or install a used assembly at the local shop. No other options were available due to no offering for internal components. All the components offered in Rein's Transfer Case Overhaul Kit are OE, identical to the original parts on the vehicle direct from the factory. Features: Includes all OE components Solution for T-cases that were damaged from overheating or lack of service made to strict OE engineering quality standards 4 year/50,000 mile warranty The kit was designed to service the ATC 45L transfer cases found in the F85 & F86 models as BMW part numbers 27107854164 and 27105A371E4
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