Dorman - First Stop Brake Master Cylinder P/N:M630641

Convert brake-pedal effort into the hydraulic pressure that feeds both brake circuits with the Dorman - First Stop Brake Master Cylinder M630641. It drops in as a direct-fit replacement for the 2009-2011 Ford Focus [All], sending pressure to the primary and secondary systems each time you press the pedal.

• Aluminum housing: constructed to match the casting material of the original part for similar performance.
• EPDM rubber components: all rubber parts use a high-quality EPDM compound to resist glycol-based brake fluid.
• 100% new: built entirely from new materials, not remanufactured.
• SAE-spec build: made to meet rigorous SAE International standards.

This unit has a 0.938 in bore and two outlets; the rearward/secondary outlet uses an M12 x 1.0 thread and the primary outlet has a 1 mm thread pitch. The package contains the master cylinder only — no reservoir, mounting hardware, or sensor is included, so transfer or source those separately and consult the vehicle service information for the correct fasteners and whether they may be reused. Signs the original may need replacing include a brake pedal that slowly sinks to the floor, a spongy pedal, or brake fluid seeping near the master cylinder. Country of origin: China.

Interchange: 100-2835 · 1002835 · 13-4192 · 134192 · 10-4192 · 104192 · 130.61137 · 355-54099 · 35554099 · 9S4Z2140B · AS4Z2140A · NM4166 · MC391137 · F900012 · MWMMC900012 · R135946
Manufacturer part number M630641.