Dorman - First Stop Brake Master Cylinder P/N:M631053

Convert brake-pedal force into the hydraulic pressure that operates the braking system with the Dorman - First Stop Brake Master Cylinder M631053. Engineered to match the design, function, and performance of the original master cylinder, it drops in as a direct-fit replacement for the 2015-2018 Chevrolet Silverado 2500 and 3500, 2015-2019 Chevrolet Silverado 2500 HD and 3500 HD, 2016-2019 Chevrolet Suburban 3500 HD, and 2015-2019 GMC Sierra 2500 HD and 3500 HD (All engines).

• Cast-iron housing: constructed to match the original part's casting material for similar performance.
• EPDM rubber components: all rubber parts use a high-quality EPDM compound for resistance to glycol-based brake fluid.
• 100% new, not remanufactured: made entirely of new materials and built to meet rigorous SAE International standards.
• 1.5 in bore, dual outlets: two outlets with M14-1.5 threads, a single reservoir, and two mounting holes.

Ships with the master cylinder, reservoir, cap, and fluid-level sensor. The push rod, mounting hardware, mounting bracket, brake booster, and bleeder hoses are not included; consult the vehicle service information for the correct fasteners and whether they may be reused. If a worn or leaking master cylinder is the cause of a sinking pedal, this replaces it. Country of origin: China.

Interchange: 130.66078 · 22989338
Manufacturer part number M631053