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Dorman - First Stop Brake Master Cylinder P/N:M630445
$158.99
Convert brake-pedal force into the hydraulic pressure that operates your brakes with the Dorman - First Stop Brake Master Cylinder M630445. It installs as a direct-fit replacement for the 2005-2007 Ford Five Hundred, 2005-2007 Ford Freestyle, and 2005-2007 Mercury Montego (all engines), and is precision-built to match the design, function, and performance of the original unit.
- 100% new: built entirely from new materials — not remanufactured — for consistent quality.
- Durable design: rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
- Precise replacement: the cylinder housing is constructed to match the casting material of the original part for similar performance.
- Built to spec: aluminum master cylinder with a 1 in bore and two outlets (M10 x 1.0 threads), made to meet rigorous SAE International standards.
This assembly includes the reservoir and the fluid-level sensor. Mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused. Signs the original master cylinder may need replacing include a soft or slowly sinking brake pedal, internal fluid bypass, or external leakage; diagnose the cause before replacing. Country of origin: China.
Interchange: 100-2195 · 1002195 · 13-4286 · 134286 · 10-4286 · 104286 · 130.61126 · 13061126 · 355-54089 · 35554089 · 5F9Z2140CA · NM4129 · BRMC-108 · BRMC108 · MC390960 · F144031 · MC144031 · Manufacturer part number M630445
This part cross-references / interchanges with the following part numbers:
100-2195, 13-4286, 10-4286, 130.61126, 355-54089, 5F9Z2140CA, NM4129, BRMC-108, MC390960, F144031, MC144031
Frequently Asked Questions
What does this brake master cylinder do?
It converts brake-pedal force into hydraulic pressure that is sent through the outlets to operate the vehicle's brakes.
Which vehicles does the M630445 fit?
It's a direct-fit replacement for the 2005-2007 Ford Five Hundred, 2005-2007 Ford Freestyle, and 2005-2007 Mercury Montego (all engines). See the Buyer's Guide tab.
Does it include a reservoir and sensor?
Yes. Both the reservoir and the fluid-level sensor are included. Mounting hardware is not included.
What are the bore and outlet specifications?
This aluminum master cylinder has a 1 in bore, two outlets, and M10 x 1.0 outlet threads.
How do I know if my master cylinder is failing?
Signs may include a soft or slowly sinking brake pedal, internal fluid bypass, or external leakage. Have the cause diagnosed before replacing.
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Dorman - First Stop Brake Master Cylinder P/N:M630445
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