Dorman - First Stop Brake Master Cylinder P/N:M630038

Turn brake-pedal effort into the hydraulic pressure that operates the vehicle's brakes with the Dorman - First Stop Brake Master Cylinder M630038. It installs as a direct-fit replacement for the 2005-2007 Ford F-250 Super Duty, F-350 Super Duty, F-450 Super Duty, and F-550 Super Duty [All], and is engineered to reproduce the design, function, and performance of the original master cylinder on those applications.

The unit uses an aluminum cylinder housing built to match the casting material of the original part, with a 1.5 in bore and three outlets — a rearward outlet sized M10 x 1.0 and a secondary outlet thread of M12 x 1.0 & 3/8-24.

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

Includes the reservoir and sensor; mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused. If a leaking or failed master cylinder is the cause of a spongy pedal or fluid loss, this replaces it. Country of origin: Taiwan.

Interchange: 100-2554 · 1002554 · 13-3253 · 133253 · 10-3253 · 103253 · 130.65100 · 355-54216 · 35554216 · 5C3Z2140FA · NM4113 · BRMC-24 · BRMC24 · MC391042 · MWMMC900092. Manufacturer part number M630038.