Dorman - First Stop Brake Master Cylinder P/N:M39791

The Dorman - First Stop Brake Master Cylinder (M39791) converts the force from your brake pedal into the hydraulic pressure that operates the brake circuits. It drops in as a direct-fit replacement for the 1986-1992 Nissan D21, 1986 Nissan Pickup, 1987-1990 Nissan Pathfinder, and 1996-1997 Nissan Pickup (all engines), engineered to match the design, function, and performance of the original master cylinder on those applications.

• Aluminum housing: the cylinder housing is constructed to match the casting material of the original part for similar performance.
• Fluid-resistant 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 three outlets, a 0.938 in bore diameter, and M10 x 1.0 rearward and secondary outlet threads with a 1 mm primary outlet thread pitch. It ships with the reservoir and sensor included. Mounting hardware is not included; consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: Taiwan.

Manufacturer part number: M39791.