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

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Looking for parts for your BMW automatic transmission or manual transmission? You'll find many of the parts available to service your BMW's transmission here. While internal transmission servicing and rebuilding should be done by professionals, there are a lot of things on the outside of the transmission that you can service or replace yourself. These include gearbox seals, o-rings, gaskets, automatic transmission filters, backup light switches, mounting bolts, flanges, collar nuts, screw plugs, Mechatronics, and more.

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Turner Motorsport - Corporate Logo
T#:397210
Part#: 017730TMS03
In Stock
Sale - Save 27% $ 113.99

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05-03-2026

$ 82.77 USD
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$ 113.99

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$ 82.77 USD
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If allowed in the rules these solid aluminum transmission mounts offer many advantages over a urethane or Delrin mounts. It's no wonder that these mounts have found their way into the top BMW racers in the country. These are machined from solid aluminum and have zero deflection, engine torque will cause a rubber or urethane mount to flex or deflect allowing more torque to passed through the drive line (instead of being wasted winding up the mount). This puts the shift linkages in better consistent alignment. And unlike rubber or urethane the aluminum has zero wear and is not affected by leaking oil or other fluids so this is likely the last set of transmission mounts you will ever need. We very strongly recommend using the solid transmission and engine mounts together as a complete kit, mixing a rubber mount with a metal mount will cause undue stress on the mounting points and will lead to a failure. We never advise using a solid mount unless a corresponding solid mount is also used.

These are a no-compromise design for all-out racing use, full solid aluminum mounts should not be used on street-driven cars since there is no material to absorb vibration making these quite harsh for regular street use (track cars don't care about noise).

Product features and benefits:

  • Crisper throttle response, positive shifter location, direct power transfer
  • Precision machined billet 6061-T6 aluminum housing
  • Grade 10.9 stud - fear not, big turbo owners
  • Engineered in-house and made in America

This item fits the following BMWs: 
1989-1995  E34 BMW  525i 530i 535i 540i M5 
1992-1998  E36 BMW  318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3 
1997-2003  E39 BMW  525i 528i 530i 540i M5 
1999-2005  E46 BMW  323i 323ci 325i 325ci 328i 328ci 330i 330ci M3 
2008-2012  E82 BMW  128i 135i 1M Coupe 
2006-2011  E90 BMW  325i 328i 330i 335d 335i - Sedan 
2006-2012  E91 BMW  328i - Wagon 
2007-2013  E92 BMW  328i 335i 335is - Coupe 
2007-2013  E93 BMW  328i 335i - Convertible 
1997-2002  Z3 BMW  Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe ​

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Turner Motorsport - Corporate Logo
T#:19395617
Part#: 049798LA01
In Stock
Sale - Save 71% $ 33.99

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

$ 10.00 USD
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Sale - Save 71%
$ 33.99

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

$ 10.00 USD
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Used when retrofitting an OEM or aftermarket CSL intake on a vehicle with SMG transmission.

Its no secret the CSL intake plenum is the pivotal upgrade for your S54. If you are fortunate enough to have an SMG equipped vehicle you are going to need a bracket to relocate the expansion tank. Our Turner motorsport bracket fits perfectly with the engine bay to facilitate the installation of your genuine or Turner branded CSL intake plenum.

Design:

Direct fit, perfect OEM replacement
304SS sheet metal design, engineered to be simpler and cheaper than its formed OE counterpart
Reverse engineered with FARO laser scanning and Solidworks CAD technology

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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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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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The proper size for removing BMW drain plugs.

ECS - Corporate Logo
T#:583896
Part#: 000920ECS01
In Stock
Sale - Save 25% $ 42.99

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

$ 32.24 USD
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Sale - Save 25%
$ 42.99

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

$ 32.24 USD
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Ensure the longevity of your BMW's drivetrain with ECS Tuning's Magnetic Plugs. These plugs are meticulously engineered in-house to provide a perfect fit and feature a permanent magnet attached to the plug body. The magnet effectively attracts and captures tiny abrasive and ferrous metal particles, preventing their circulation through lubrication systems. Metal particles can accumulate due to various conditions such as normal wear, machining operations, casting flaws, and stress usage, leading to excessive wear of vital components. ECS Tuning's Magnetic Plugs help alleviate this concern by trapping these particles, thus safeguarding the internal components of your drivetrain. With a convenient 17mm hex head design, these plugs eliminate the need for special tools required for OEM plugs.

Key Benefits:

  • Removes abrasive metal particles from drivetrain fluid
  • Prevents excessive wear to internal components
  • Meticulously engineered for a perfect fit
  • Features a permanent magnet for efficient particle capture
  • Convenient 17mm hex head design for easy installation
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Genuine BMW - Corporate Logo
T#:13248
Part#: 23142229113
In Stock
Sale - Save 5% $ 119.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 113.69 USD
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Sale - Save 5%
$ 119.99

This product was last offered at the strikethrough price on
06-25-2026

$ 113.69 USD
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Genuine BMW Gear Identification Switch
This item fits the following BMW Chassis:
E39 M5,E46 M3,E39,E46

ECS - Corporate Logo
T#:388091
Part#: 002705ECS
In Stock
Sale - Save 10% $ 117.99

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

Starting at $ 106.19 USD
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Sale - Save 10%
$ 117.99

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

Starting at $ 106.19 USD
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A sloppy shifter is one of the common complaints of older BMWs. In addition to the shifter linkage the transmission mounts contribute to rough and clunky shifting. BMW transmission mounts are rubber and get softer over time. This allows the transmission to dance around which changes the geometry of the shift linkage and could make it harder to shift. These urethane transmission bushings are stiffer than the stock rubber mounts and won't let the transmission shift around as much. The round design also has more surface area than the stock mounts which helps spread the load. Because the urethane is stiffer, expect more vibration to make its way into the shift lever area. Engine motor mounts should also be considered as a cause for driveline vibration, transmission movement, and poor shifting. Consider replacing your motor mounts at the same time as your tranny mounts.

Price is for the pair of transmission mounts with hardware.

This item fits the following BMWs: 
1989-1995  E34 BMW  525i 530i 535i 540i M5 
1992-1998  E36 BMW  318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3 
1997-2003  E39 BMW  525i 528i 530i 540i M5 
1999-2005  E46 BMW  323i 323ci 325i 325ci 328i 328ci 330i 330ci M3 
2008-2012  E82 BMW  128i 135i 1M Coupe 
2006-2011  E90 BMW  325i 328i 330i 335d 335i - Sedan 
2006-2012  E91 BMW  328i - Wagon 
2007-2013  E92 BMW  328i 335i 335is - Coupe 
2007-2013  E93 BMW  328i 335i - Convertible 
1997-2002  Z3 BMW  Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe 

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Genuine BMW - Corporate Logo
T#:360771
Part#: 23121222769
In Stock
Sale - Save 5% $ 118.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 112.92 USD
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Sale - Save 5%
$ 118.99

This product was last offered at the strikethrough price on
06-25-2026

$ 112.92 USD
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Genuine BMW - Corporate Logo
T#:30058
Part#: 07149157161
Ships in 3 Business Days
Sale - Save 45% $ 5.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 3.32 USD
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$ 5.99

This product was last offered at the strikethrough price on
05-02-2026

$ 3.32 USD
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Genuine BMW Plug-In Connection Bracket
This item fits the following BMW Chassis:
E36 M3,E60 M5,E63 M6,E46 M3,E85 Z4M,E53 48IS,E36,E39,E46,E53 X5 X5,E63,E83 X3,E85 Z4,E86 Z4,E90,E92,E93

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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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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.

Genuine BMW - Corporate Logo
T#:51370
Part#: 24117507555
In Stock
Sale - Save 6% $ 12.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 12.24 USD
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Sale - Save 6%
$ 12.99

This product was last offered at the strikethrough price on
06-15-2026

$ 12.24 USD
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Genuine BMW Screw Plug - M14X1,5
This item fits the following BMW Chassis:
E39,E46,E85

Genuine European BMW - Corporate Logo
T#:361538
Part#: 41147896136
In Stock
Sale - Save 39% $ 29.99

This product was last offered at the strikethrough price on
05-02-2026

$ 18.29 USD
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Sale - Save 39%
$ 29.99

This product was last offered at the strikethrough price on
05-02-2026

$ 18.29 USD
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When you upgrade to the CSL intake, you have to replace and relocate the SMG reservoir. This bracket mount the new reservoir after the CSL conversion exactly as designed by BMW.
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
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Sale - Save 20%
$ 14.99

This product was last offered at the strikethrough price on
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$ 11.99 USD
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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.
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