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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Turner Polyurethane Shifter Arm Carrier Bushing - E36 E46 E9X F30 F32...
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Turner Motorsport - Corporate Logo
T#:395189
Part#: 021012TMS02
In Stock
Sale - Save 24% $ 78.99

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

$ 59.99 USD
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$ 78.99

This product was last offered at the strikethrough price on
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$ 59.99 USD
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Even after rebuilding your manual transmission shifter with brand new BMW components or installing a short shift kit, your shifts will still be at the mercy of soft factory bushings. Designed with 100% comfort and low manufacturing costs in mind, BMW's factory carrier bushing offers a freedom of movement on all axis, resulting in "factory installed slop".
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Turner Titanium Magnetic Differential Drain Plug - M22x1.5
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Turner Motorsport - Corporate Logo
T#:593924
Part#: 027030TMS01
In Stock
Sale - Save 25% $ 89.99

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

$ 67.49 USD
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Sale - Save 25%
$ 89.99

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

$ 67.49 USD
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When both extreme-duty protection and saving every gram matters: the Turner Magnetic Differential Drain Plug.
Turner Motorsport Chassis Mount Short Throw Shifter - E30 E36 E39 E46...
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Turner Motorsport - Corporate Logo
T#:33213291
Part#: 049570LA01KT
Ships on Nov 3, 2026
Sale - Save 20% $ 457.99

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

$ 366.39 USD
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Sale - Save 20%
$ 457.99

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

$ 366.39 USD
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The ULTIMATE shifter upgrade for your BMW! Experience more precise throws, less shift lever travel, and an all-around transformation in your shifting experience.

For dozens of years, enthusiasts have critiqued the imprecise and vague feeling of BMW manual transmissions. Plagued with long throws, fore and aft play in gear, and a generally loose feeling, your OEM BMW shifter leaves much to be desired. While most standard carrier-mount short throw shifter kits will aid in reducing throw length and eliminating side-to-side play in gear, some enthusiasts long for a hardcore, race-inspired shifter that completely removes play and excessive throw length. At Turner Motorsport we share the same desire and set out to offer the ULTIMATE upgrade with this Performance Chassis Mount Short Shifter.

WHY UPGRADE?

Factory BMW shifter assemblies are complex by nature. The main component of this assembly is the shift carrier, a cast aluminum piece positioned inside the transmission tunnel that incorporates bushings at both ends for mounting. Like most factory parts, these bushings are designed to reduce NVH (noise, vibration, and harshness) transmission to the cabin. To the spirited driver, however, these bushings translate to flex and vagueness in the shift lever. Moreover, because this carrier is mounted to both the transmission and the body, the entire shifter assembly will "float" with the driveline, further increasing the vague and imprecise feeling of your shifter.

Our Performance Chassis Mount Short Shifter removes the shift carrier assembly entirely—removing any prospect of flex caused by bushings or driveline movement. By contrast, this chassis mount shifter offers a drastic reduction in shift lever travel, vagueness, and side-to-side play. An elevated base allows for moving the fulcrum point upwards, resulting in a much shorter and more precise throw. Shift times are further reduced by a tall, "rally style" shift lever, used to aid in leverage while also bringing the lever closer to the steering wheel. Our design incorporates a proprietary centering spring design, which is adjustable for increasing or decreasing self-centering force. In short, this design eliminates all the drawbacks of your factory BMW shifter, translating to more control, greater precision, shorter throws, and faster shift times.

FEATURES & BENEFITS

Reduced Throw: Modified shifter geometry and heightened fulcrum point translate to a shorter shift lever throw
Improved Shifter Feel: Eliminating the shift carrier and associated bushings drastically reduces "slop" and side-to-side play in the shift lever
Increased Precision: Mounting the shifter to the chassis allows for little to no variation in gear selection
Universal Fitment: Fits many BMW chassis with the provided base plate and hardware (see "Fits These Cars" for exact fitment information)
DESIGN

6061 aluminum, 4130 steel, and 316 stainless steel construction
A type-II black anodized finish
Adjustable self-centering spring
"Rally Style" shift lever
Spherical bearing pivot with maintenance-free brass insert
Product Development:

Our Chassis Mount Shifters are designed, engineered, tested and quality inspected by our Research and Development team at Turner. Nothing but the highest level of precision and quality through leading-edge product development technology including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing our in-house 3D printer and rigorous long term product testing.

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CSL SMG Expansion Tank Bracket
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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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Differential Input Shaft Seal - Priced Each
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Corteco - Corporate Logo
T#:44021076
Part#: 33121213949
In Stock at Vendor
$ 27.99

This product was last offered at the strikethrough price on
05-07-2026

$ 26.99 USD
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$ 26.99 USD
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Corteco Output Shaft Seal
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Corteco - Corporate Logo
T#:583459
Part#: 33107505604
In Stock
$ 14.42

This product was last offered at the strikethrough price on
07-06-2026

$ 11.99 USD
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$ 11.99 USD
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Seals the axles into the differential

Transmission Output Seal - E46 M3, E39 540i, M5, E60 M5, E63 M6 ...
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Corteco - Corporate Logo
T#:19676
Part#: 23121222769
Ships in 1-2 days
$ 11.71 USD
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This is the OEM transmission rear output seal for cars with the S6S420G or GS7S47BG transmissions. It is a good idea to replace all the seals on the transmission whenever replacing a clutch as it is much easier to do while the transmission is down off the car and these seals commonly develop leaks over time. This seal works with either the manual transmission or the SMG transmission.

This item fits the following BMWs:
2001-2006 E46 BMW M3
1993-1995 E34 BMW 540i
1997-2003 E39 BMW 540i M5
2006-2010 E60 BMW M5
2006-2010 E63 BMW M6
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