Turn pedal effort into the hydraulic pressure your brakes rely on with the Dorman First Stop Brake Master Cylinder, part number M630039. 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 (engine: All), one per vehicle.
Dorman precision-engineers this master cylinder to mirror the original unit's design, function and performance on the listed trucks. It is built from new, high-quality materials for a safe, durable replacement.
- Precise replacement: the aluminum cylinder housing is built to match the original part's casting material and is designed for similar performance.
- Durable design: every rubber component uses a high-quality EPDM compound for resistance to glycol-based brake fluid.
- 100% new: made entirely of new materials for quality and safety.
- Strict specifications: made to meet rigorous SAE International standards.
Specifications: 1.5-inch bore, four outlets, M10 x 1.0 rearward outlet, and M12 x 1.0 & 3/8-24 secondary outlet threads. The reservoir and sensor are included. Mounting hardware is not included, so consult the vehicle service information for the correct fasteners. Country of origin: Taiwan.
Signs this part may need replacing include a soft or sinking brake pedal, fluid leaking at the master cylinder, or a lit brake warning lamp. These symptoms can have other causes, so diagnose the brake system first. If the master cylinder is the cause, this unit replaces it.
Interchange: 100-4275 · 13-3254 · 10-3254 · 130.65101 · 355-54217 · BRMC-25
1004275 · 133254 · 103254 · 13065101 · 35554217 · BRMC25 · 5C3Z2140HA · NM4116 · MC390956 · MWMMC900093
This part cross-references / interchanges with the following part numbers:
100-4275, 13-3254, 10-3254, 130.65101, 355-54217, 5C3Z2140HA, NM4116, BRMC-25, MC390956, MWMMC900093
