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

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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 Tools - Corporate Logo
T#:580353
Part#: B8800025
In Stock
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$ 24.74 USD
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The proper size for removing BMW drain plugs.
Bav Auto Tools - Corporate Logo
T#:578659
Part#: B3300000
In Stock
Sale - Save 3% $ 21.99

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$ 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 Tools - Corporate Logo
T#:580446
Part#: B8800141
In Stock
Sale - Save 25% $ 36.99

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$ 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 Tools - Corporate Logo
T#:585675
Part#: CBTTOOL
In Stock
Sale - Save 22% $ 89.99

This product was last offered at the strikethrough price on
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$ 70.42 USD
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Sale - Save 22%
$ 89.99

This product was last offered at the strikethrough price on
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$ 70.42 USD
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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 Tools - Corporate Logo
T#:580336
Part#: B8800004
In Stock
Sale - Save 25% $ 38.99

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$ 29.24 USD
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$ 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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Bav Auto Tools - Corporate Logo
T#:580437
Part#: B8800132
In Stock
Sale - Save 10% $ 47.99

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$ 43.19 USD
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$ 47.99

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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 Tools - Corporate Logo
T#:580429
Part#: B8800122
In Stock
Sale - Save 10% $ 40.99

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$ 36.89 USD
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$ 40.99

This product was last offered at the strikethrough price on
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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 Tools - Corporate Logo
T#:580335
Part#: B8800003
In Stock
Sale - Save 15% $ 60.99

This product was last offered at the strikethrough price on
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$ 51.84 USD
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$ 60.99

This product was last offered at the strikethrough price on
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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 Tools - Corporate Logo
T#:580427
Part#: B8800120
In Stock
Sale - Save 10% $ 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.

HD/Perf Street Sprung
Must be used with ACT Flywheel 601010 or 601015
ACT - Corporate Logo
T#:567299
Part#: BM9-HDSS
In Stock
$ 897.00 USD
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$ 897.00 USD
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This kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use an exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide spring support, reduce stress concentrations, and increase strength and reliability.
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Bav Auto Tools - Corporate Logo
T#:580333
Part#: B8800001
In Stock
Sale - Save 15% $ 171.99

This product was last offered at the strikethrough price on
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$ 146.19 USD
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$ 171.99

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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.
ACT - Corporate Logo
T#:567293
Part#: BM9-XTSS
In Stock at Vendor
$ 949.00 USD
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$ 949.00 USD
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### **BM9-XTSS Clutch Kit – Engineered for Peak Performance** The **BM9-XTSS Clutch Kit** is designed for enthusiasts who demand maximum performance and durability. Featuring an **ACT Xtreme pressure plate**, this kit delivers **higher clamp load, reduced deflection, and extended clutch life**—ideal for spirited street driving and track use. Each diaphragm undergoes a **four-stage heat-treatment process**, ensuring superior strength and longevity. **Precision cover stampings** enhance rigidity, providing a significant upgrade over stock components. Paired with **ACT’s Performance Street Disc**, this kit utilizes **steel-backed organic friction material** with **high copper content** for **better heat dissipation and burst strength**. Its **reduced marcel design** allows for **quicker, smoother shifts**, perfectly complementing the Xtreme pressure plate. Expect **quiet operation, enhanced durability, and long-term reliability**, making it a top choice for performance-driven drivers. ### **Key Features:** - **Pedal Feel:** Moderate to heavy effort, smooth engagement, and minimal gear rattle. - **Extended Lifespan:** ACT’s exclusive diaphragm design ensures longer-lasting friction material. - **Precision Engineering:** Optimized for **heat resistance, fade reduction, and maximum durability**. Upgrade your drivetrain with confidence—the **ACT BM9-XTSS Clutch Kit** is built to handle the pressure. 🚗💨
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ACT - Corporate Logo
T#:567303
Part#: 601010
In Stock at Vendor
$ 748.00 USD
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$ 748.00 USD
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This Streetlite flywheel is considerably lighter than stock and is the most durable flywheel offering from ACT. This is preferred for street or drag racing. ACT flywheels are serviceable and can be resurfaced with no need to purchase additional parts. Noticeably improved engine response and acceleration, OE to mild gear rattle LifeHeat-treated forging for strength and toughness, induction-hardened ring gears for maximum life One-piece construction allows less opportunity for failure and provides uniform efficient heat transfer from the clutch disc. No more warped inserts or loose ring gears CNC machined and dynamically computer balanced for smooth high RPM reliability
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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
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$ 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.
Bav Auto Tools - Corporate Logo
T#:580407
Part#: B8800097
In Stock
Sale - Save 3% $ 383.99

This product was last offered at the strikethrough price on
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$ 372.47 USD
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$ 383.99

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$ 372.47 USD
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Allows you to both remove and install rear subframe to body bushings without removing your subframe, saving you hours of labor from having to disassemble suspension components.

HD/Race Sprung 6 Pad
Must be used with ACT Flywheel 601010 or 601015
ACT - Corporate Logo
T#:567300
Part#: BM9-HDG6
Ships in 6 Business Days
$ 935.00 USD
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$ 935.00 USD
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BM9-HDG4 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use an exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's 4-pad spring-centered race disc features a spring-center to properly damp torsional vibrations for quieter operation and resist failure even under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide spring support, reduce stress concentrations, and increase strength and reliability. With the 4-pad spring-centered race disc, engagement is harsher, but shifting is faster. ACT's 4-pad spring-centered race disc is well-suited for smaller disc sizes in smaller engines.
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ACT - Corporate Logo
T#:567306
Part#: BM9-HDSSKT
In Stock at Vendor
$ 1,645.00 USD
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$ 1,645.00 USD
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Every design is thoroughly researched and tested prior to release to guarantee their products meet and exceed the customer's expectations. Careful attention is payed to factors such as engine torque, maximum RPM, drive type (FWD, RWD, AWD), and the type of driving being done, such as street, sport, track events, racing, etc. ACT's clutch kits are competitively priced, often with  specifications greater than competitor's and at a higher quality.

This clutch kit features a Xtreme pressure plate, an G6 racing 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.

The G6 clutch disc is a sprung, 6-pad racing disc that is recommended for high horsepower street and race us and is better at handling high heat than the 4-pad disc. Its material composition is high quality, ceramic friction materials and a heavy duty torsional dampening springs that are rate for this clutch disc's size and expected uses. It has an increased torque capacity, and is better for faster shifting with its low weight and inertia. Being a racing disc, it has good durability and its ceramic composition allows for high heat tolerances. It also has a fast, aggressive engagement in comparison to standard street-use clutch discs.

The XACT Streetlite Flywheel is their most popular flywheel as it is great for both street and drag racing. It allows your engine to rev quicker, giving you increased throttle response, and is considerably lighter than your stock flywheel thanks to its light single-mass design, all while still being very durable!

Clutch Kit Specs:

  • Torque Rating: 465 ft/lbs
  • 52% torque capacity increase over stock!
  • Type of Disc: Street
  • 10-count spline
  • Spline Size: 1-3/8" inch
  • Flywheel Weight: 15.1 lbs
  • 1 year Warranty from retail purchase date!
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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!
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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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Sale - Save 25%
$ 19.99

This product was last offered at the strikethrough price on
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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.
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
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$ 17.99 USD
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$ 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.

HD/Race Sprung 4 Pad
Must be used with ACT Flywheel 601010 or 601015
ACT - Corporate Logo
T#:567301
Part#: BM9-HDG4
Ships in 6 Business Days
$ 905.00 USD
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$ 905.00 USD
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BM9-HDG4 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's 4-pad spring-centered race disc features a spring-center to properly damp torsional vibrations for quieter operation and resist failure even under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide spring support, reduce stress concentrations, and increase strength and reliability. With the 4-pad spring-centered race disc, engagement is harsher, but shifting is faster. ACT's 4-pad spring-centered race disc is well-suited for smaller disc sizes in smaller engines.
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ACT - Corporate Logo
T#:567302
Part#: 601015
In Stock at Vendor
$ 766.00 USD
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$ 766.00 USD
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The **ACT 601015 Prolite Flywheel** is ACT’s **lightest, lowest-inertia option**, designed for **quick throttle response and rapid acceleration**. Perfect for **road and rally racing**, it prioritizes **performance over drivability**. Precision-balanced for **strength, heat resistance, and rigidity**, it ensures **consistent high-rev performance**. Additionally, ACT flywheels are **fully serviceable** and can be **resurfaced without extra parts**.
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