Dorman - First Stop Brake Master Cylinder P/N:M630685

Turn pedal pressure into the hydraulic force your brakes rely on with this Dorman brake master cylinder, part number M630685 from the First Stop line. It is a direct-fit replacement for the 2008-2018 Nissan Frontier, 2010-2012 Nissan Pathfinder and 2008-2015 Nissan Xterra. It is engineered to replicate the design, function and performance of the original master cylinder on the listed applications, and it is built from new, high-quality materials.

• Precise replacement: the cylinder housing is constructed to match the casting material of the original part for similar performance.
• Durable design: every rubber component is made of high-quality EPDM compound to resist glycol-based brake fluid.
• 100% new: made entirely of new materials, with quality and safety in mind.
• Strict specifications: built to meet rigorous SAE International standards.

The master cylinder sits at the head of the hydraulic brake system. When you press the pedal, it pushes brake fluid under pressure through the lines to apply the brakes at each wheel. Signs it may need replacing include a soft or sinking brake pedal, fluid leaking around the cylinder, or a brake warning light. If a failed master cylinder is the cause, this unit replaces it. The brake system must be bled after installation, and the cylinder is commonly bench-bled first. Follow the vehicle service information. Engine and configuration details are listed in the Buyer's Guide tab.

Interchange: 100-2819 · 13-3911 · 11-3911 · 130.42336 · 355-67059
NM55507 · 46010ZS00A · MC391303 · F144286 · MC144286 · 1002819 · 133911 · 113911 · 13042336 · 35567059