BMW Drivetrain Parts for BMW E46 M3 S54 (1999-2005)

Clear BMW chassis

Please ensure your correct model is selected

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.

Sub-Categories

Sort By:

Bavarian Autosport - Corporate Logo
T#:1777897
Part#: B2300001KT
In Stock
Sale - Save 20% $ 26.99

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

$ 21.59 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 26.99

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

$ 21.59 USD
Free Shipping on orders $49 and up

BMW Clutch Stop

Improve your shifting experience with the BMW Clutch Stop. This adjustable clutch stop is designed to install beneath the clutch pedal, allowing you to set the precise stopping point just after the clutch disengages. Once adjusted, you can achieve consistent, smooth, and efficient shifts every time, saving valuable time and effort.

Benefits:

  • Enhances shifting precision and consistency
  • Saves time with smooth and fast shifts
  • Adjustable design allows for personalized settings

Upgrade your BMW's shifting performance with the BMW Clutch Stop for a more enjoyable driving experience.

Show More Show Less
Bavarian Autosport - Corporate Logo
T#:1135777
Part#: 26112226527
In Stock
Sale - Save 10% $ 73.99

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

$ 66.59 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 73.99

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

$ 66.59 USD
Free Shipping on orders $49 and up
This Bav Auto replacement flex disc (aka: the guibo) is a vibration dampener mounted on the back of the transmission which connects to the driveshaft. When it has worn, it can produce knocking sounds and a terrible vibration throughout the car. It's especially noticeable at low speeds and when starting from a standstill. Oil leaking from the back of the transmission will significantly reduce its life. This can also be used as an upgrade on the E30 M3. It has much more rubber in between the bolt holes which makes it last longer. This is 5mm thicker than the stock E30 flex disc so adjustment of the 2-piece driveshaft may be required. The original flex disc bolts can be re-used.
Show More Show Less
CTA Tools - Corporate Logo
T#:580739
Part#: CTA8075
In Stock
$ 59.32 USD
Free Shipping on orders $49 and up
For inside pulling jobs such as pilot and other bearings.

CTA Tools - Corporate Logo
T#:5028777
Part#: 7073
In Stock
$ 28.57 USD
Free Shipping on orders $49 and up
Great for removing & filling Brake Fluid, Anti-Freeze, Gear Oil plus Power Steering Fluid & more

CTA Tools - Corporate Logo
T#:31357378
Part#: CTA2495
In Stock
$ 57.99 USD
Free Shipping on orders $49 and up

The CTA 8 in 1 Oil & Lube Multi-Wrench is your go-to tool for tackling various oil drain, transfer case, and differential plugs with ease. Designed to fit most plug sizes, this versatile wrench ensures high torque applications are a breeze with its robust construction.


Key Features:

  • Versatile Fit: Designed to fit most oil drain, transfer case, and differential plugs.
  • Offset Head Design: Features a yoke support for handling high torque applications.
  • Secure Locking: Indexing feature to lock the socket into position securely.
  • Durable Construction: Nickel plating provides enhanced durability and longevity.
  • Built-In Magnet: Handle includes a magnet for convenient handling of small parts.
  • 6-Point Metric Design: Ensures precise fit and reduced slippage.
  • Compact Size: Measures 10-1/2” (27cm) in overall length.
  • Multiple Sizes: Includes sizes 12, 13, 14, 15, 16, 17, 18, and 19mm.
Show More Show Less
CTA Tools - Corporate Logo
T#:5677376
Part#: CTA4017
In Stock
$ 56.46 USD
Free Shipping on orders $49 and up
Separates half-shafts from transaxle

ACT - Corporate Logo
T#:4126638
Part#: BM9-XTSS - XT
Ships in 6 Business Days
$ 883.00 USD
Free Shipping on orders $49 and up

Advanced Clutch Technology (ACT) designs, engineers and develops products by leveraging decades of track and performance street experience. Advanced CAD, FEA simulation, and CAM tools help ensure highly optimized performance, reliability, and repeatability. These key advantages are produced by combining the best engineering and design methodologies with the latest in materials and manufacturing techniques.

ACT clutch kits stand unequaled in terms of consistent pedal feel, high torque capacity, long wear life and durability. In-house manufacturing is critical in tuning components specifically to each individual application while maintaining the predictable ACT pedal feel across the entire catalog.

This clutch kit features an Xtreme pressure plate, a Performance Street sprung clutch disc, and an XACT Streetlite Flywheel.

Their Xtreme pressure plate offers a 50-120% clamp load increase, moderate to heavy pedal feel, and is recommended for high performance street and racing applications. All diaphragms went through a four stage heating process for increased strength and unparalleled performance.

Next in this kit is the Performance Street clutch disc. This is the most popular sprung clutch disc and features high quality organic friction material with a high copper content for improved heat transfer and a steel backed lining for increased strength in burst load circumstances. This organic clutch disc has a significantly higher torque capacity than a stock disc but still retains a long life span and operates quietly and reliably.

 

Clutch Kit Specs:

  • Torque Rating: 520 ft/lbs
  • 68% torque capacity increase over stock!
  • Type of Disc: Street
  • 26-count spline
  • Spline Size: 1-3/8" inch
  • Disc Weight: 3.5 lbs
  • Pressure Plate Weight: 10.7 lbs
  • 1 year Warranty from retail purchase date!
Show More Show Less
CTA Tools - Corporate Logo
T#:391370
Part#: CTA7077
Ships on Aug 28, 2026
$ 71.46 USD
Free Shipping on orders $49 and up
You will find this 1500 cc Extractor/Filler kit handy for all types of fluid changes

CTA Tools - Corporate Logo
T#:641054
Part#: CTA4995
In Stock
$ 13.56 USD
Free Shipping on orders $49 and up
Ideal for many axle nuts and other high-torque fasteners

Bavarian Autosport - Corporate Logo
T#:639833
Part#: 13621433076
In Stock
Sale - Save 20% $ 14.99

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

$ 11.99 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 14.99

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

$ 11.99 USD
Free Shipping on orders $49 and up
This is the coolant temperature sensor used in many BMW models from the late-1990s to the mid-2010s. The engine computer relies on the coolant temp to set the fuel mapping for the engine. As the car warms up the computer changes the fuel mixture. If your car is running a bit rich (too much fuel) it could be because this sensor is failing and not sending the correct info to the computer. This sensor is located in a variety of places depending on the engine. But it's one of those easy replacement items 'while you're in there' when doing a water pump or thermostat replacement. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
Show More Show Less