Dorman - First Stop Brake Master Cylinder P/N:M630886

Convert brake-pedal force into the hydraulic pressure that operates the brakes with the Dorman - First Stop Brake Master Cylinder (MPN M630886). It's precision-engineered to reproduce the design, function, and performance of the factory master cylinder and drops in as a direct-fit replacement on the 2011-2012 Ford F-250 Super Duty, 2012 Ford F-350, 2011-2012 Ford F-350 Super Duty, 2011-2012 Ford F-450 Super Duty, and 2011-2012 Ford F-550 Super Duty [All engines].

• Cast iron housing: the cylinder housing is built to match the casting material of the original part for similar performance.
• Durable EPDM seals: 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, and made to meet rigorous SAE International standards.
• Ports and reservoir: 1.5 in bore with two outlets (M14x1.5 rearward, M12x1.5 secondary), a single reservoir, and an included sensor.

The package contains the master cylinder. Mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: Taiwan. If a failed master cylinder is the cause of a sinking or spongy pedal or an internal fluid leak, this replaces it; diagnose the cause before replacing.

Interchange: 100-3770 · 1003770 · 13-4520 · 134520 · 130.65138 · 13065138 · 355-54254 · 35554254 · BC3Z2140B · MC391163
Manufacturer part number M630886