This direct-fit ATE Brake Fluid Reservoir Cap supports brake-system service on the BMW 3 Series models listed below (1977–1985). It closes and protects the brake-fluid reservoir while allowing correct system service, with final compatibility determined by the vehicle’s exact brake equipment.

ATE-branded brake fluid reservoir caps are engineered as direct-fit brake-system components for their listed applications, supporting correct braking operation, fitment, and serviceability at the installed location.

Technical Details

• Manufacturer: ATE
• Manufacturer part number: 390433
• OE/reference number: 34-32-1-153-157
• Part type: Brake Fluid Reservoir Cap
• Listed vehicle range: BMW 3 Series
• Listed model years: 1977–1985

Fitment & Compatibility

Use the fitment table below to confirm the exact year, make, model, and submodel before ordering. Brake-system equipment can vary within the same model year, so compare the installed component and reference number when possible.

For help confirming compatibility, send PMB Performance your VIN and the details from the installed part. Our team has more than 20 years of experience with brake-system components and fitment.