Dorman - First Stop Brake Master Cylinder P/N:M39780

Keep hydraulic pressure flowing to both brake circuits with the Dorman - First Stop Brake Master Cylinder M39780. It installs as a direct-fit replacement for the 1988-1995 Honda Civic (All), 1988-1991 Honda CRX (All), and 1993-1997 Honda Civic del Sol (All), converting brake-pedal force into the hydraulic pressure that operates the vehicle's braking system.

• Aluminum housing: constructed to match the casting material of the original part for similar performance.
• Durable rubber: all rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
• 100% new: made entirely of new materials, not remanufactured.
• Strict specifications: made to meet rigorous SAE International standards.

This unit has a 0.813 in bore and two outlets with M10 x 1.0 threads (1 mm pitch). A reservoir and a sensor are included; mounting hardware is not included, so consult the vehicle service information for the correct fasteners and whether they may be reused. If a worn master cylinder is the cause of a slowly sinking or spongy brake pedal or unexplained fluid loss, this replaces it — diagnose the cause before replacing. Country of origin: China. Manufacturer part number M39780.