ATE Rear Wheel Cylinder for BMW 3 Series (1977–1983)

This ATE Wheel Cylinder is an application-specific replacement for select BMW 3 Series vehicles from 1977–1983. It applies hydraulic pressure to the brake shoes in a drum-brake assembly and should be matched to the exact model, year, and brake configuration before installation.

ATE-branded wheel cylinders 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: 020043
• OE/reference number: 34-21-1-117-104
• Part type: Wheel Cylinder
• Installed position: rear
• Listed vehicle range: BMW 3 Series
• Listed model years: 1977–1983

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.

PMB Performance can help verify the application when the vehicle has multiple brake packages. Provide the VIN or existing part number for support from a team with more than 20 years of brake-component experience.