Turn brake-pedal effort into the hydraulic pressure that operates the braking system with the Dorman - First Stop Brake Master Cylinder (M630313). It drops in as a direct-fit replacement for the 2003-2007 Ford Escape [All], 2005-2006 Mazda Tribute [All], and 2005-2007 Mercury Mariner [All], reproducing the design, feel, and performance of the factory unit on the listed applications.
- 100% new: built entirely from new materials — not remanufactured.
- Aluminum housing: cylinder housing constructed to match the casting material of the original part for similar performance.
- Durable seals: rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
- Ready to plumb: two outlets (secondary outlet thread M12 x 1.0), a 1-inch bore, and an included reservoir and sensor; made to meet SAE International standards.
Mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: Taiwan.
Interchange: 100-2551 · 1002551 · 13888 · 13-3218 · 133218 · 10-2987 · 102987 · 10-3218 · 103218 · 130.65096 · 355-54212 · 35554212 · 5L8Z2K478CA · 5L8Z2L454AA · 6L8Z2140C · M4101 · NM4101 · EF924340Z · ZZC243990 · ZZC243990A · BRMC-4 · BRMC4 · MC390910 · F140339 · F143051 · MC140339 · MC143051 · Manufacturer part number M630313.
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this brake master cylinder do?
It converts the force you apply at the brake pedal into hydraulic pressure that is sent through the outlets to operate the braking system.
Which vehicles does M630313 fit?
It's a direct-fit replacement for the 2003-2007 Ford Escape, 2005-2006 Mazda Tribute, and 2005-2007 Mercury Mariner (all engines). See the Buyer's Guide tab to confirm your vehicle.
Does it include a reservoir and sensor?
Yes. Per the catalog, this master cylinder includes the reservoir and the sensor. The package contents are the master cylinder assembly.
Is mounting hardware included?
No. Mounting hardware is not included; consult the vehicle service information for the correct fasteners and whether they may be reused.
What are the bore size and outlet specs?
It has a 1-inch bore diameter and two outlets, with a secondary outlet thread of M12 x 1.0. The housing is aluminum and rubber components use an EPDM compound.