Turn pedal effort into hydraulic braking pressure with the Dorman First Stop Brake Master Cylinder M71285, a 100% new unit that comes with its reservoir. It fits many vehicles, among them the 1967-1970 Chevrolet Impala, 1967-1969 Chevrolet Camaro and 1967-1968 Chevrolet Chevelle. See the Buyer's Guide tab for the full list.
Dorman precision-engineers this unit to match the original master cylinder's design, function and performance on the listed applications. It is built from new, high-quality materials for a safe, durable replacement. If you need an Impala master cylinder or a unit for another listed vehicle, it is a direct-fit replacement for the listed applications.
- Precise replacement: the cast iron cylinder housing matches the casting material of the original part and is intended to deliver similar performance.
- Durable design: every rubber component uses a high-quality EPDM compound that resists glycol-based brake fluid.
- 100% new: made entirely of new materials.
- Strict specifications: made to meet rigorous SAE International standards.
Specifications: 1.125-inch bore diameter, two outlets and a 1/2-20 secondary outlet thread. The reservoir is included. Mounting hardware and a sensor are not included. Country of origin: China.
A soft or sinking brake pedal, or fluid seeping from the master cylinder, can be a sign that this part may need replacing. Diagnose the cause first, and follow the vehicle service information for installation and brake bleeding.
