Dorman - First Stop Brake Master Cylinder P/N:M39500

Convert brake-pedal force into the hydraulic pressure that operates the braking system with the Dorman - First Stop Brake Master Cylinder (M39500). Precision-engineered to match the design, function, and performance of the original unit, it installs as a direct-fit replacement for the 1979-1988 Toyota Pickup and 1984-1988 Toyota 4Runner (All engines).

• Cast-iron housing: constructed to match the casting material of the original part for similar performance.
• EPDM rubber components: made of a high-quality EPDM compound for resistance to glycol-based brake fluid.
• 100% new: built entirely from new materials, not remanufactured.
• Built to spec: made to meet rigorous SAE International standards.

This master cylinder has two outlets with M10 x 1.0 threads and a 0.813 in bore. The reservoir and sensor are included; mounting hardware is not included, so consult the vehicle service information for the correct fasteners and whether they may be reused. Signs the original may need replacing include a sinking or spongy brake pedal, fluid loss at the cylinder, or reduced braking response — diagnose the cause before replacing. Country of origin: Taiwan.

Manufacturer part number M39500.