Correct GMC167 replacement master cylinder for Minis with diagonal split dual braking system. This was used from approximately the end of 1975 through 1980, but continued until 1982 in some export markets. Both brake line fittings are 10mm.
IMPORTANT FITTING INSTRUCTIONS: This unit must be bench-bled before installation. Prior to installing the cylinder onto the vehicle, place a block of wood underneath the pedal to prevent the pedal from traveling all the way to the floor during final bleeding. If the pedal travels to the floor it will damage the internals of the cylinder and, if equipped, upset the PWDA switch. Using silicone brake fluid will void any warranty.
See GRK1002 for rebuild kit.