BMW Throttle Body Parts for BMW 3 Series E46 (1999-2005)

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We carry a variety of parts related to BMW throttle bodies and throttle body upgrades. Modern BMWs have electronic throttles that need replacement rather than repair. A malfunctioning unit can disable the car so it's important to pay attention to any fault codes related to the 'EML' system. Older mechanical throttles are much more reliable and less prone to any issues. Replacement of any throttle housing is easy and straightforward.

Larger throttle bodies have been advertised for years as a performance upgrade. On their own they will not make any power difference. But combined with other upgrades, such as larger mass air sensors and intakes, they can contribute to power gains. However, we do not currently sell larger throttle bodies. We do offer adapter plates to mount different throttle housings onto your intake manifold. This is most commonly done along with a stand-alone engine management system with or without drive-by-wire control.
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Turner Motorsport - Corporate Logo
T#:421
Part#: TEN9990850
In Stock
Sale - Save 25% $ 103.99

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

$ 77.99 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 103.99

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

$ 77.99 USD
Free Shipping on orders $49 and up

This precision-engineered throttle body adapter plate was originally developed for the Turner Motorsport SPEED World Challenge racing team. It enables the use of a mechanical throttle body in place of the M54 engine's factory drive-by-wire system, offering greater control and reliability for high-performance or competition use. Ideal for custom builds and race applications, this adapter plate ensures a seamless installation while retaining the structural integrity and alignment needed for optimal throttle performance.

Important Notes:

Designed specifically for professional racing applications. Requires the use of custom software for proper integration and functionality. Recommended for experienced tuners and mechanics familiar with custom engine configurations.

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Universal Throttle Body Coupler - 45 Degree 2.5" (63.50mm)
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:382969
Part#: 003402ECS03A-16
In Stock
Sale - Save 25% $ 39.99

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

$ 29.99 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 39.99

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

$ 29.99 USD
Free Shipping on orders $49 and up

Elevate your BMW project with ECS Tuning silicone couplers and elbows, providing a high-quality, precision-engineered solution for various applications. Whether you're installing an intercooler, fabricating a custom intake system, or pursuing other automotive projects, ECS Tuning delivers reliable performance and durability. Trust ECS Tuning to meet your needs and enhance your BMW project.

  • High-quality silicone couplers and elbows for BMW projects
  • Precision-engineered for reliability and performance
  • Versatile solution for intercooler installations, custom intake systems, and more
  • Ensures durability and longevity for your automotive projects
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aFe Throttle Body Spacer - E46 325i
CARB certified for sale in all 50 states
AFE - Corporate Logo
T#:4527
Part#: 46-31008
EO#: D-550-11
Ships in 3 Business Days
$ 139.00 USD
Free Shipping
$ 139.00 USD
Free Shipping
The Silver Bullet throttle body spacer creates turbulence in the air flow just prior to entry into the engine increasing horsepower, torque and improving throttle response. In recent dyno testing by aFe, this throttle body spacer produced +10hp and +14lbs. x ft. torque . The Silver Bullet throttle body spacers are constructed out of durable T-6061 billet aluminum and using a unique serrated/helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix only throttle spacers. Great power per dollar performance.

This item fits the following BMWs:
2001-2005 E46 BMW 325i 325ci 325xi
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Achilles Motorsports - Corporate Logo
T#:1211243
Part#: 11-AM-TCK-S54KT
Ships in 3 Business Days
$ 454.99 USD
Free Shipping
$ 454.99 USD
Free Shipping
Achilles Motorsports' Throttle Conversion Kit was designed and manufactured to allow the removal of the OEM drive-by-wire system and replaces it with a more conventional throttle cable system. This kit is very useful when the S54 engine is installed in other BMW chassis (ie. E30, E36), or in the E46 M3 chassis when used to run with aftermarket ECU's. This kit features machined, billet aluminum components and incorporates a housing(barrel) with two side-by-side bearings and an 8mm shaft that allows for smooth, linear pedal actuation with no flex.
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