Drivetrain Mounts and Upgrades for BMW Z4 M Roadster S54 (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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Powerflex - Corporate Logo
T#:362735
Part#: PFR5-4621
In Stock
$ 42.99 USD
Free Shipping on orders $49 and up

Differential bushings are responsible for keeping the differential in solid alignment while dampening drivetrain vibration. While OE rubber bushings are fine when they are new from the factory, aged and worn out rubber bushings create a multitude of issues that can range from annoying to dangerous. As a factory bushing ages, it begins to harden and become brittle. When this happens the bushing will actually shrink and allow for movement at the differential mounting point. At this point, the differential is free to shift under load causing a noticeable clunking noise under acceleration and deceleration and massively increasing the stress on the driveshaft and axles. Manual transmissions suffer the worst from this as it can make shifting difficult since the differential will shift when the clutch is engaged and disengaged.

By replacing these bushings with full polyurethane, the movement is eliminated since the mounting point is supported by a much stiffer material that will not harden or shrink over time. This means less stress on the driveshaft and axles and greater longevity of supporting components. 

Powerflex Black Series bushings are the ultimate in track and race bushings. Featuring 95A durometer polyurethane, Black Series bushings are 25% stiffer than street bushings. Engineered to perform, Powerflex performance polyurethane control arm bushings offer a supreme level of control, while still providing enough comfort for the street, with advanced polyurethane that reduces NVH that often accompanies lesser bushings. Expect improved acceleration response, more direct shifting feel and overall improved drivetrain composure with Powerflex performance polyurethane bushings.

Poweflex is a leading manufacturer of aftermarket suspension bushings. Using state of the art design and manufacturing, all replacement bushings are engineered to out-perform and out-last the ones that came in the car. Each line of bushings is meticulously tested and then re-tested to ensure perfect fitment and enduring quality through the life of the vehicle. A full lifetime warranty backs every one of their products and demonstrates the level of confidence and commitment Powerflex has to their customers. 

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034 Density Line Upgraded Transmission Mount Set
2X Entries Into Our F80 M3 Sweepstakes
034Motorsport - Corporate Logo
T#:389755
Part#: 034-509-4050-SD
In Stock
$ 66.00 USD
Free Shipping on orders $49 and up
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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    Revshift - Corporate Logo
    T#:47885235
    Part#: PTM-BT-80A
    Back Ordered
    $ 59.99 USD
    Free Shipping on orders $49 and up
    80A Street (Black) Bushings: Stiffer and stronger than OEM rubber. Minimal increase in NVH. Great choice as an upgrade over stock mounts (OEM+).

    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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    Revshift - Corporate Logo
    T#:41728752
    Part#: PDB-E46M-80A
    Ships on Oct 16, 2026
    $ 109.99 USD
    Free Shipping on orders $49 and up
    Revshift polyurethane differential bushings completely replace the OEM rubber bushings on the E46 M3 and Z4M. These bushings stiffen the differential, improving the vehicle's handling capabilities and eliminating drive-line slop.
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    Genuine BMW - Corporate Logo
    T#:2215
    Part#: 33172282484
    Ships in 1 Business Day
    2% off MSRP $ 45.99

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

    $ 44.99 USD
    Free Shipping on orders $49 and up
    2% off MSRP
    $ 45.99

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

    $ 44.99 USD
    Free Shipping on orders $49 and up
    When working on the rear subframe, replacement of any rubber bushings and mounts should be performed. This is the front differential mount bushing and it takes the majority of the torquing motion of the diff when under load. The constant twisting will cause this bushing to wear out pretty fast. This is the Original BMW rubber part.

    Applications:
    2001-2006 E46 M3, M3 CSL coupe and convertible
    2007-up Z4 M Roadster, M Coupe

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    Genuine BMW - Corporate Logo
    T#:49276
    Part#: 22111094694
    Ships in 1-2 days
    2% off MSRP $ 45.99

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

    $ 44.99 USD
    Free Shipping on orders $49 and up
    2% off MSRP
    $ 45.99

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

    $ 44.99 USD
    Free Shipping on orders $49 and up


    Genuine BMW Supporting Bracket Right
    This item fits the following BMW Chassis:
    E46 M3,E85 Z4M,E46,E85 Z4,E86 Z4

    Powerflex Black Series - Corporate Logo
    T#:362719
    Part#: PFR5-4621B
    Ships in 2 Business Days
    $ 42.99 USD
    Free Shipping on orders $49 and up

    Differential bushings are responsible for keeping the differential in solid alignment while dampening drivetrain vibration. While OE rubber bushings are fine when they are new from the factory, aged and worn out rubber bushings create a multitude of issues that can range from annoying to dangerous. As a factory bushing ages, it begins to harden and become brittle. When this happens the bushing will actually shrink and allow for movement at the differential mounting point. At this point, the differential is free to shift under load causing a noticeable clunking noise under acceleration and deceleration and massively increasing the stress on the driveshaft and axles. Manual transmissions suffer the worst from this as it can make shifting difficult since the differential will shift when the clutch is engaged and disengaged.

    By replacing these bushings with full polyurethane, the movement is eliminated since the mounting point is supported by a much stiffer material that will not harden or shrink over time. This means less stress on the driveshaft and axles and greater longevity of supporting components. 

    Powerflex Black Series bushings are the ultimate in track and race bushings. Featuring 95A durometer polyurethane, Black Series bushings are 25% stiffer than street bushings. Engineered to perform, Powerflex performance polyurethane control arm bushings offer a supreme level of control, while still providing enough comfort for the street, with advanced polyurethane that reduces NVH that often accompanies lesser bushings. Expect improved acceleration response, more direct shifting feel and overall improved drivetrain composure with Powerflex performance polyurethane bushings.

    Poweflex is a leading manufacturer of aftermarket suspension bushings. Using state of the art design and manufacturing, all replacement bushings are engineered to out-perform and out-last the ones that came in the car. Each line of bushings is meticulously tested and then re-tested to ensure perfect fitment and enduring quality through the life of the vehicle. A full lifetime warranty backs every one of their products and demonstrates the level of confidence and commitment Powerflex has to their customers. 

    This part fits the following BMWs:
    2001 - 2006 E46 M3

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    Transmission Mount - Priced Each
    2X Entries Into Our F80 M3 Sweepstakes
    Rein - Corporate Logo
    T#:375734
    Part#: 22316771219
    In Stock at Vendor
    $ 24.99 USD
    Free Shipping on orders $49 and up
    $ 24.99 USD
    Free Shipping on orders $49 and up
    Mounted at the rear of transmission on crossmember

    Meyle Transmission Mount
    5X Entries Into Our F80 M3 Sweepstakes
    We Price Match - Give Us A Call or Chat!
    Meyle - Corporate Logo
    T#:579237
    Part#: 3002371101
    In Stock
    $ 12.99 USD
    Free Shipping on orders $49 and up
    Mounted at the rear of transmission on crossmember
    Febi Transmission Mount
    We Price Match - Give Us A Call or Chat!
    Febi - Corporate Logo
    T#:363812
    Part#: 22316799331
    In Stock
    $ 12.99 USD
    Free Shipping on orders $49 and up
    Mounted at the rear of transmission on crossmember
    Genuine BMW - Corporate Logo
    T#:13460
    Part#: 33176760337
    In Stock
    $ 9.99 USD
    Free Shipping on orders $49 and up
    Replace your differential mounting hardware during service to eliminate problems caused by rusted or stripped hardware.


    Transmission Mount
    2X Entries Into Our F80 M3 Sweepstakes
    URO - Corporate Logo
    T#:377308
    Part#: 22316771219
    In Stock
    $ 7.99 USD
    Free Shipping on orders $49 and up
    With bad transmission mounts, excessive vibration and noise is transferred to the cabin. The rubber in the mounts wear out over time and cause too much movement in the drivetrain. Replace them when wear is detected to keep everything tight.
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    Genuine BMW - Corporate Logo
    T#:15231
    Part#: 22326760945
    In Stock
    $ 7.99 USD
    Free Shipping on orders $49 and up
    $ 7.99 USD
    Free Shipping on orders $49 and up


    Genuine BMW Hex Bolt With Washer - M8X22-8.8-Zns3
    This item fits the following BMW Chassis:
    E36 M3,E39 M5,E60 M5,E63 M6,E46 M3,E82 1M Coupe,E85 Z4M,E34,E36,E38,E39,E46,E63,E65,E82,E83 X3,E85 Z4,E86 Z4,E89 Z4,E90,E92,E93,F01,F02,F06,F10,F12,F13,F22,F30,F31,F32,F33,F34,F36,F80 M3,F82 M4,F83

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    Condor Speed Shop - Corporate Logo
    T#:577943
    Part#: E36HS
    Ships in 7 Business Days
    $ 18.99 USD
    Free Shipping on orders $49 and up
    Condor's Engine Mount Heat Sleeves reflect up to 90 percent of radiant heat. They withstand 1,100 degrees F of radiant heat and up to 450 degrees F of direct heat. The extra protection of the heat sleeves is a perfect fit for street cars, track cars, and other high heat applications. Their mounts withstand temperatures up to 180 degrees F and do not need any heat protection during regular usage, but we recommend the extra protection of their sleeves for all vehicles with high underhood heat temperatures such as turbo and supercharged vehicles. Condor heat sleeves can be easily installed by simply slipping the sleeve around the engine mount and securing using the Velcro tabs. *LISTING IS FOR ONE HEAT SHIELD **Heat sleeve fitment is for Condor Engine Mounts only.
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