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Dorman - First Stop Brake Master Cylinder P/N:M630372
$175.99
The hydraulic heart of the brake system, the Dorman – First Stop Brake Master Cylinder M630372 converts brake-pedal force into hydraulic pressure through two outlets. It installs as a direct-fit replacement for the 2002-2008 MINI Cooper (All engines).
- 100% new: made entirely of new materials, not remanufactured, for consistent quality and safety.
- Durable design: all rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
- Precise replacement: the aluminum housing is built to match the casting material of the original part for similar performance.
- Strict specifications: made to meet rigorous SAE International standards, and engineered to replicate the original master cylinder's design and function on the listed applications.
Specs include a 0.875 in bore diameter, two outlets, a rearward/secondary outlet size of M12 x 1.0, and a primary outlet thread pitch of 1 mm. The reservoir, sensor, and mounting hardware are not included; consult the vehicle service information for the correct fasteners and whether they may be reused. A sinking or spongy brake pedal or unexplained brake-fluid loss can be signs this part may need replacing — diagnose the cause first, since those symptoms can have other sources. Country of origin: Taiwan.
Interchange: 100-1188 · 1001188 · 34316758228 · 34336785668 · 13-3321 · 133321 · 11-3321 · 113321 · 130.34201 · 355-32001 · 35532001 · NM55460 · MC391353 · F142340 · MC142340
Manufacturer part number M630372
This part cross-references / interchanges with the following part numbers:
100-1188, 34316758228, 34336785668, 13-3321, 11-3321, 130.34201, 355-32001, NM55460, MC391353, F142340, MC142340
Frequently Asked Questions
What vehicles does this master cylinder fit?
It's a direct-fit replacement for the 2002-2008 MINI Cooper (All engines). Check the Buyer's Guide tab to confirm it fits your vehicle.
Is this master cylinder new or remanufactured?
It's 100% new — made entirely of new materials, not remanufactured, and built to meet rigorous SAE International standards.
Does it include a reservoir, sensor, or mounting hardware?
No. The reservoir, sensor, and mounting hardware are not included. Consult the vehicle service information for the correct fasteners and whether they may be reused.
What are the bore and outlet specifications?
It has a 0.875 in bore diameter and two outlets, with a rearward/secondary outlet size of M12 x 1.0 and a primary outlet thread pitch of 1 mm.
What are signs my master cylinder may need replacing?
A sinking or spongy brake pedal or unexplained brake-fluid loss can be signs. Diagnose the cause first, since these symptoms can have other sources.
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Dorman - First Stop Brake Master Cylinder P/N:M630372
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