Billet Clutch Master Cylinder Fitting | E30, E28, E34
This fitting is found at the end of the master cylinder reservoir hose. It is tasked with delivering hydraulic fluid to the master cylinder inlet, a crucial part of clutch system operation. Unfortunately, BMW chose plastic for constructing the factory piece. After years of exposure to brake fluid, the plastic fitting degrades, resulting in a total loss of clutch hydraulic pressure and brake fluid all over your carpet.
Our team of E30 enthusiasts is aware of this issue, and aims to solve this increasingly common failure with a durable aluminum fitting! Swap your fragile plastic fitting for our 6061 billet aluminum alternative during your next clutch master cylinder service to ensure leak-free operation for the life of your vehicle.
Finally, A Permanent Solution!
Fits BMW
E30 3 Series
E28 5 Series
E34 5 Series
E24 6 Series
E32 7 Series
E31 8 Series
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Ships on Sep 8, 2026
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For the short shifter to work you must remove the vibration damper from the driveshaft
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Ships on Aug 4, 2026
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Lifetime Replacement
For production vehicles that fit from 1984-1991
