BMW Transmission Parts for BMW Z4 M Roadster S54 (2003-2008)

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Looking for parts for your BMW automatic transmission or manual transmission? You'll find many of the parts available to service your BMW's transmission here. While internal transmission servicing and rebuilding should be done by professionals, there are a lot of things on the outside of the transmission that you can service or replace yourself. These include gearbox seals, o-rings, gaskets, automatic transmission filters, backup light switches, mounting bolts, flanges, collar nuts, screw plugs, Mechatronics, and more.

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Pentosin ATF 8 Automatic Transmission Fluid - 1 Liter - BMW 8HP Transmissions
Pentosin ATF 8 Automatic Transmission Fluid - 1 Liter - BMW 8HP Trans...
Pentosin - Corporate Logo
T#:45963154
Part#: 1058110
In Stock
Sale - Save 7% $ 28.99

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$ 26.95 USD
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$ 28.99

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Transmission fluid is responsible for both cooling and lubricating sensitive transmission components. Over time, this fluid becomes contaminated by particulate from clutch and gear components wearing down. This contamination reduces the fluid's ability to act as a lubricant, eventually leading to increased wear and tear within the transmission. To prevent excess wear and keep your transmission in top shape, the fluid and filter should be replaced regularly. As per ZF's recommendations, we suggest performing a full service on your 8HP automatic transmission every 50,000 miles. If your vehicle has been modified to produce more power than stock or if it is regularly track-driven, we recommend shorter 30,000-mile service intervals. This will ensure your transmission's fluid is free from contamination, which will help extend the life of internal transmission components, such as clutch packs and solenoids.
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Pentosin ATF 8 Automatic Transmission Fluid - 5 Liters - BMW 8HP Transmissions
Pentosin ATF 8 Automatic Transmission Fluid - 5 Liters - BMW 8HP Tran...
Pentosin - Corporate Logo
T#:45997487
Part#: 1058210
In Stock
Sale - Save 5% $ 131.99

This product was last offered at the strikethrough price on
09-01-2026

$ 125.08 USD
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$ 131.99

This product was last offered at the strikethrough price on
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$ 125.08 USD
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Bav Auto Automatic Transmission Filter Kit - E39 E46 Z4 (A5S325Z Transmission)
Bav Auto Automatic Transmission Filter Kit - E39 E46 Z4 (A5S325Z Tran...
10X Entries Into Our F80 M3 Sweepstakes
Bavarian Autosport - Corporate Logo
T#:639803
Part#: 24341423376
In Stock
Sale - Save 20% $ 29.99

This product was last offered at the strikethrough price on
05-03-2026

$ 23.99 USD
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$ 29.99

This product was last offered at the strikethrough price on
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Remember to service your transmission at the recommended intervals to increase your transmission's life span and reliability! From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
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Pentosin Super DOT4 Brake Fluid - 1 Liter
Pentosin Super DOT4 Brake Fluid - 1 Liter
Pentosin - Corporate Logo
T#:348645
Part#: BF1P4
In Stock
Sale - Save 5% $ 19.99

This product was last offered at the strikethrough price on
09-01-2026

$ 18.99 USD
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$ 19.99

This product was last offered at the strikethrough price on
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$ 18.99 USD
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Boiling Point - Dry 265°C (509°F) / Wet >165°C (329°F)
Pentosin ATF 9 Automatic Transmission Fluid - 1 Liter
Pentosin ATF 9 Automatic Transmission Fluid - 1 Liter
Pentosin - Corporate Logo
T#:46134785
Part#: 1058111
Ships in 7 Business Days
Sale - Save 7% $ 35.99

This product was last offered at the strikethrough price on
09-01-2026

$ 33.41 USD
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Sale - Save 7%
$ 35.99

This product was last offered at the strikethrough price on
09-01-2026

$ 33.41 USD
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Pentosin ATF9 is specially developed with reduced viscosity to optimize the performance of the latest generation 8 and 9-speed ZF automatic transmissions. Pentosin ATF 9 has been developed to deliver outstanding friction control to ensure excellent shifting performance.
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Pentosin ATF 9 Automatic Transmission Fluid - 5 Liters
Pentosin ATF 9 Automatic Transmission Fluid - 5 Liters
Pentosin - Corporate Logo
T#:46134786
Part#: 1058211
Ships in 7 Business Days
Sale - Save 5% $ 163.99

This product was last offered at the strikethrough price on
09-01-2026

$ 155.15 USD
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Sale - Save 5%
$ 163.99

This product was last offered at the strikethrough price on
09-01-2026

$ 155.15 USD
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Pentosin ATF9 is specially developed with reduced viscosity to optimize the performance of the latest generation 8 and 9-speed ZF automatic transmissions. Pentosin ATF 9 has been developed to deliver outstanding friction control to ensure excellent shifting performance.
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