BMW Drivetrain Parts for BMW 3 Series E30 (1984-1991)

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:

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
Free Shipping on orders $49 and up
Sale - Save 25%
$ 32.99

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

$ 24.74 USD
Free Shipping on orders $49 and up
The proper size for removing BMW drain plugs.
ECS - Corporate Logo
T#:366828
Part#: 009314ECS01A
In Stock
Sale - Save 25% $ 62.99

This product was last offered at the strikethrough price on
06-13-2026

$ 47.24 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 62.99

This product was last offered at the strikethrough price on
06-13-2026

$ 47.24 USD
Free Shipping on orders $49 and up
You use a magnetic drain plug for your engine oil, right? Why not apply the same proactive thinking to the differential too? This is a direct replacement magnetic differential drain plug for your BMW. It will catch and retain fine and larger metal particles in your diff oil. If you're proactive in your diff oil servicing, you will catch a minor issue long before it becomes a headache. Diff drain plug includes one sealing o-ring. Direct replacement for Genuine BMW part number(s): 33117525064, 33110308370, 33110152626
Show More Show Less
ECS - Corporate Logo
T#:36472759
Part#: 055182LA01-02
In Stock
Sale - Save 25% $ 33.99

This product was last offered at the strikethrough price on
06-14-2026

$ 25.49 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 33.99

This product was last offered at the strikethrough price on
06-14-2026

$ 25.49 USD
Free Shipping on orders $49 and up

The ECS Billet Master Cylinder Fitting is the ultimate solution for a notorious failure point in BMW E30 clutch systems. This critical fitting, located at the end of the master cylinder reservoir hose, is responsible for delivering hydraulic fluid to the clutch master cylinder inlet. Unfortunately, the OEM plastic fitting is prone to degradation after prolonged exposure to brake fluid, often leading to total hydraulic pressure loss and brake fluid leaks inside your vehicle.

ECS has addressed this issue by engineering a robust and long-lasting alternative. Crafted from 6061 billet aluminum and finished with black hard-coat anodizing for superior corrosion resistance, this precision-machined fitting replaces the fragile plastic original, ensuring leak-free performance for the lifetime of your vehicle. Upgrade to our Billet Master Cylinder Fitting during your next clutch master cylinder service and enjoy peace of mind knowing your BMW is equipped with a durable, high-quality solution.

Features & Benefits:

Made from 6061 billet aluminum for a permanent, reliable upgrade over the factory plastic fitting. Black hard-coat anodized finish ensures long-lasting protection against the elements. Precision-machined barbs match OEM dimensions for a leak-free seal with Genuine and aftermarket master cylinders. Designed for a secure fit within the factory grommet location. Prevents brake fluid leaks and loss of clutch hydraulic pressure caused by plastic fitting failure. Upgrade your BMW and bulletproof your master cylinder with the ECS Billet Aluminum Master Cylinder Fitting. Ensure clutch hydraulic system reliability and enjoy peace of mind knowing your failure-prone plastic master cylinder fitting has been addressed.

Show More Show Less

Bav Auto Tools - Corporate Logo
T#:578659
Part#: B3300000
In Stock
Sale - Save 3% $ 21.99

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

$ 21.33 USD
Free Shipping on orders $49 and up
Sale - Save 3%
$ 21.99

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

$ 21.33 USD
Free Shipping on orders $49 and up

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.

Show More Show Less

ECS - Corporate Logo
T#:386439
Part#: 017877ECS01A
In Stock
Sale - Save 20% $ 63.99

This product was last offered at the strikethrough price on
06-13-2026

$ 51.19 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 63.99

This product was last offered at the strikethrough price on
06-13-2026

$ 51.19 USD
Free Shipping on orders $49 and up

This braided stainless steel line replaces the stock hydraulic hose connecting your clutch slave cylinder to the clutch master cylinder. There are several deficiences with rubber, especially as it ages - when new the rubber expands and swells under pressure and the pedal can feel spongy. As rubber ages and is exposed to extreme temperatures the rubber can harden and even shrink (common on brake hoses), which results in a stiff pedal. Rubber clutch lines do not stand up to the stresses of hard use. ECS Exact-Fit stainless reinforced clutch lines provide more confident and dependable shifting by maintaining consistent line pressure, long lasting corrosion resistance, and increased protection from failure. These lines are reinforced with braided stainless steel mesh, affording superior expansion resistance. This resistance to expansion creates a firmer pedal, and a more direct clutch pedal feel. The signature red polymer coating provides additional protection from the elements and abrasion.

This particular stainless steel clutch line fits the following BMWs:
1984-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix M3
1988 E28 BMW M5
1987-1989 E24 BMW M6 

Show More Show Less
ECS - Corporate Logo
T#:384201
Part#: 121980ECS01KT
In Stock
Sale - Save 25% $ 36.99

This product was last offered at the strikethrough price on
06-13-2026

$ 27.74 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 36.99

This product was last offered at the strikethrough price on
06-13-2026

$ 27.74 USD
Free Shipping on orders $49 and up

Some modifications to your vehicle may not produce power to create gains in the overall performance of your driving. When you add a "Po' Boy" clutch stop to your BMW the performance gain is directly felt in the driving experience.

The ECS clutch stop allows the driver to fine tune the position of the clutch pedal to closely match the engagement point for precise, quicker shifting. The adjustment range found in this product can be set to the stock engagement point or can be adjusted to follow the wear of the clutch.  Meaning your new experience will never change all the way to the end of the clutch life and can be reset to enjoy the next clutch.

Note: This modification might require some slight modification to the clutch switch mounting bracket, which can be bent slightly by hand.

 

Show More Show Less

Bav Auto Tools - Corporate Logo
T#:580411
Part#: B8800102
In Stock
Sale - Save 10% $ 115.99

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

$ 104.39 USD
Free Shipping
Sale - Save 10%
$ 115.99

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

$ 104.39 USD
Free Shipping
Thin sockets included in this Bav Auto puller kit thread on to the axle shaft and pull the splined axle shaft into the hub. Can also be used to press wheel bearings onto the spindle shaft.
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
Free Shipping on orders $49 and up
Sale - Save 25%
$ 36.99

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

$ 27.74 USD
Free Shipping on orders $49 and up
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

ECS - Corporate Logo
T#:30662812
Part#: 055059LA01
In Stock
Sale - Save 56% $ 52.99

This product was last offered at the strikethrough price on
04-28-2026

$ 23.24 USD
Free Shipping on orders $49 and up
Sale - Save 56%
$ 52.99

This product was last offered at the strikethrough price on
04-28-2026

$ 23.24 USD
Free Shipping on orders $49 and up

As your E30 ages, the rear differential bushing can crack, dry rot, and split. It's time for an upgrade. The ECS Tuning Heavy Duty Differential Bushing is crafted with performance in mind. Instead of using polyurethane, which is known for increasing NVH, the enthusiasts at ECS chose HD 70D rubber. This material offers a close-to-factory feel without the excess deflection of softer bushings, ensuring a pleasurable driving experience free from differential whine and excess movement.

Features & Benefits:

Eliminates Weak OEM Mount: The aging E30 chassis deserves an upgrade. Replace your old, cracked, and worn factory bushing with this HD alternative for improved performance. Perfect for Street or Track: Constructed from HD rubber instead of polyurethane or Delrin, this bushing provides comfort for daily driving while remaining effective in performance applications. Added Responsiveness: The 70D HD rubber compound is stiffer than the stock material, reducing drivetrain movement and effectively locking down your rear differential. Easy Installation: Precision-manufactured to the exact specifications of your OEM differential bushing, the ECS heavy-duty replacement installs just like the factory component. Whether you are replacing an aging factory bushing, removing excess driveline movement, or balancing performance and comfort, ECS Tuning has you covered with their Heavy Duty Rear Differential Bushing.

Show More Show Less

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
05-03-2026

$ 70.42 USD
Free Shipping on orders $49 and up
Sale - Save 22%
$ 89.99

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

$ 70.42 USD
Free Shipping on orders $49 and up
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.
Show More Show Less
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
Free Shipping on orders $49 and up
Sale - Save 25%
$ 38.99

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

$ 29.24 USD
Free Shipping on orders $49 and up
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.
Show More Show Less
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
05-03-2026

$ 43.19 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 47.99

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

$ 43.19 USD
Free Shipping on orders $49 and up
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

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

$ 36.89 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 40.99

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

$ 36.89 USD
Free Shipping on orders $49 and up
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
05-03-2026

$ 51.84 USD
Free Shipping on orders $49 and up
Sale - Save 15%
$ 60.99

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

$ 51.84 USD
Free Shipping on orders $49 and up
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.
Show More Show Less
Bav Auto Tools - Corporate Logo
T#:580367
Part#: B8800043
In Stock
Sale - Save 15% $ 37.99

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

$ 32.29 USD
Free Shipping on orders $49 and up
Sale - Save 15%
$ 37.99

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

$ 32.29 USD
Free Shipping on orders $49 and up
Use this tool to press the splined axle end out of the wheel flange or hub on rear-wheel drive and front-wheel drive 4 LUG BMWs and MINIs. This tool is also used to pull the front wheel bearing hub on 2-wheel drive BMW models with sealed bearing and hub assemblies.
Show More Show Less

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
Free Shipping
Sale - Save 10%
$ 109.99

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

$ 98.99 USD
Free Shipping
For use with B8800122 impact driver to remove stuck CV axle shafts.

ECS - Corporate Logo
T#:369434
Part#: 2511-001
In Stock
Sale - Save 25% $ 80.99

This product was last offered at the strikethrough price on
06-13-2026

$ 60.74 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 80.99

This product was last offered at the strikethrough price on
06-13-2026

$ 60.74 USD
Free Shipping on orders $49 and up

Upgrade Your BMW Shifter with the BMW Teflon Shifter Bushing Kit

  • Enhanced shifting precision for a smoother driving experience
  • Durable Teflon construction for long-lasting performance
  • Reduces play and slop in the shifter mechanism
  • Easy installation with included hardware and instructions

Enhance the performance of your BMW's shifter with the BMW Teflon Shifter Bushing Kit. This kit is designed to provide enhanced shifting precision, resulting in a smoother and more responsive driving experience. Crafted from durable Teflon material, these bushings offer long-lasting performance and reliability. By reducing play and slop in the shifter mechanism, this kit ensures precise gear changes every time you shift. Installation is quick and easy with the included hardware and detailed instructions, allowing you to enjoy the benefits of improved shifter performance in no time.

Show More Show Less
ECS - Corporate Logo
T#:388561
Part#: 25117519669T
In Stock
Sale - Save 25% $ 73.99

This product was last offered at the strikethrough price on
06-13-2026

Starting at $ 55.48 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 73.99

This product was last offered at the strikethrough price on
06-13-2026

Starting at $ 55.48 USD
Free Shipping on orders $49 and up

Shifter slop is a common complaint among all BMW models. Some of that play comes from the bushings where the shifter carrier mounts to the transmission. The original rubber carrier bushings don't last very long and when they get too soft the shifter flops around. These Teflon bushings are not as stiff as Delrin so they won't transmit as much vibration and buzz in the shifter. Yet Teflon will last much longer than the factory rubber, giving you precise shifting for many years.

Note: this is only one part of the shift linkage and there may be other components that need replacing to improve shifting feel.

We advise getting a replacement bushing carrier pin as well. If the original rubber bushings are worn the pin will have wear too and you will still have slop in the shifter, even with the new bushings.

These are the ROUND shifter carrier bushings (some BMW models have oval bushings).

This item fits the following BMWs:
6/1986-1992 E30 BMW 318i 318is 325e 325es 325i 325is 325ic M3
1992-1999 E36 BMW 318i 318is 318ic 323is 323ic 325i 325is 325ic
1999-2006 E46 BMW 323i 323ci 325i 325ci
1982-1988 E28 BMW 528e 533i 535i 535is M5
1989-1995 E34 BMW 525i 535i M5

Show More Show Less

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
05-03-2026

$ 146.19 USD
Free Shipping
Sale - Save 15%
$ 171.99

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

$ 146.19 USD
Free Shipping
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 Tools - Corporate Logo
T#:580402
Part#: B8800092
Ships on Sep 1, 2026
Sale - Save 5% $ 355.99

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

$ 338.19 USD
Sale - Save 5%
$ 355.99

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

$ 338.19 USD
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 Tools - Corporate Logo
T#:580421
Part#: B8800114
In Stock
Sale - Save 25% $ 29.99

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

$ 22.49 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 29.99

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

$ 22.49 USD
Free Shipping on orders $49 and up
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#: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
Free Shipping on orders $49 and up
Sale - Save 25%
$ 19.99

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

$ 14.99 USD
Free Shipping on orders $49 and up
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
05-03-2026

$ 17.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Sale - Save 18%
$ 21.99

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

$ 17.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Necessary in order to use Bav Auto's Hub Adapter/Puller (B8800120) . 5/8" x 18T UNF thread.