ECS Differential Mounts for BMW Z4 M Roadster S54 (2003-2008)

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Differential Bushings can vastly change the feel of your BMW. While you may notice a slight increase in NVH, upgrading your differential bushings will give your rear end a more planted feel that you can't put a price on.
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E46 M3, Z4M Performance Polyurethane Differential Bushing Set ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECS - Corporate Logo
T#:378193
Part#: 002447ECS03KT
In Stock
Sale - Save 35% $ 193.99

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

$ 126.09 USD
Free Shipping
Sale - Save 35%
$ 193.99

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

$ 126.09 USD
Free Shipping

Worn rubber differential mounts will lead to the differential twisting and shifting around in the rear subframe. Not only will this be noisy but it's bad for driver confidence and bad for the chassis as well. Even on fresh rubber bushings the differential has deflection and twist, especially if the car has been modified for more torque. Since the differential is centrally mounted in the rear subframe, with all suspension mounts interconnected, a differential with too much deflection will affect handling and could even damage the rear subframe.

These 88A urethane E46 M3 diff mounts are much stiffer than stock but still not as solid as our Turner aluminum/Delrin bushings. This set will resist twisting much better than the stock rubber mounts. Included is the front diff mount and two rear mounts in the cover.

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BMW E46 Z4 Front Position Differential Bushing - Performance Polyuret...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECS - Corporate Logo
T#:363116
Part#: 002447ECS02
In Stock
Sale - Save 40% $ 64.99

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

$ 38.99 USD
Free Shipping on orders $49 and up
Sale - Save 40%
$ 64.99

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

$ 38.99 USD
Free Shipping on orders $49 and up

Enhance your driving experience with ECS Tuning's Performance Polyurethane Differential Bushings. These meticulously engineered bushings offer a direct connection between your right foot, the engine, and the chassis, making them an essential upgrade.

  • Say goodbye to the softness of factory rubber differential bushings that absorb vibrations and reduce performance.
  • ECS Tuning's polyurethane bushings eliminate the deflection found in factory rubber bushings, resulting in improved power transfer from the differential to the wheels.
  • Experience enhanced throttle control, whether you're navigating a challenging canyon road, drag racing, or simply commuting.

Unlike delrin or solid differential mounts, these bushings deliver improved performance without introducing harshness or excessive vibration.

Crafted from durable 88A durometer polyurethane and enhanced with a black anodized 6061-T6 aluminum sleeve.

Resistant to chemicals, ozone degradation, road salt, and general wear and tear, ensuring a longer service life.

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