Drivetrain Mounts and Upgrades for BMW Z Series E85/6 (2003-2008)

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From the factory, engine and transmission mounts are rubber and thus a wear component. Worn out engine or transmission mounts create sloppiness and a disconnect between the driver and your BMW's powerplant. If your vehicle is purpose built for the track, we recommend solid engine and transmission mounts. These have zero deflection, but come at the expense of added NVH (noise, vibration, and harshness). Poly engine and transmission mounts offer a good balance between OEM rubber and solid mounts for those with mixed purpose vehicles, offering great performance and connection with little sacrifice in terms of NVH.

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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 25% $ 66.99

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

$ 50.24 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 66.99

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

$ 50.24 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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034 Density Line Performance Transmission Mount Set
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
034Motorsport - Corporate Logo
T#:389755
Part#: 034-509-4050-SD
In Stock
Sale - Save 10% $ 66.00

This product was last offered at the strikethrough price on
06-28-2026

$ 59.40 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 66.00

This product was last offered at the strikethrough price on
06-28-2026

$ 59.40 USD
Free Shipping on orders $49 and up

Upgrade Your BMW's Performance and Comfort with 034Motorsport's Density Line Mounts

Experience enhanced performance and comfort with 034Motorsport's Density Line Mounts, exclusively available at ECS Tuning for purchase and shipment within the United States. Crafted from high-durometer rubber, these mounts offer increased durability and performance without compromising on comfort. Engineered as an optimal solution compared to harsh polyurethane mounts, they provide improved drivetrain responsiveness and crisper shifting without significant noise or vibration in the cabin.

Key Benefits:

  • Manufactured from high-durometer 60 Durometer Rubber
  • Reduces drivetrain slop for enhanced performance
  • Provides crisper shifting and more direct power transfer
  • Minimal increase in noise, vibration, or harshness (NVH)
  • Complete drop-in replacement for factory transmission mounts
  • Ideal for use alongside upgraded engine mounts
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