Turn every press of the brake pedal into hydraulic pressure with the Dorman First Stop Brake Master Cylinder M630059, a new aluminum unit supplied with its reservoir and sensor. It fits many vehicles, among them the 2007 Saturn Ion, 2002-2005 Saturn L300 and 2002-2003 Saturn L200, listed for all engines. See the Buyer's Guide tab for the full list.
Dorman precision-engineers this master cylinder to mirror the original unit's design, function and performance on the listed applications. It is built from new, high-quality materials for a safe, durable replacement.
- Precise replacement: the aluminum cylinder housing is constructed to match the original part's material for similar performance.
- Durable design: all rubber components use a high-quality EPDM compound that resists 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-inch bore diameter; two outlets; rearward outlet size M10 x 1.0; secondary outlet thread M12 x 1.0; primary outlet thread pitch 1 mm. Reservoir and sensor included. Mounting hardware is not included. Country of origin: China.
A soft or sinking pedal, or fluid leaking at the cylinder, can be a sign that a master cylinder needs replacing. If the original unit is the cause, M630059 replaces it. Follow the vehicle service information for fasteners and for bleeding the brake system after installation.
Interchange: 100-2337 · 13-2957 · 10-2957 · 130.62124 · 131.62124 · 355-53002
1002337 · 132957 · 102957 · 13062124 · 13162124 · 35553002 · M901266 · 13500 · MC511390 · 21018891 · 22683095 · M4022 · NM4022 · MC390576 · F141137 · MC141137
This part cross-references / interchanges with the following part numbers:
M901266, 100-2337, 13500, 13-2957, 10-2957, 130.62124, 131.62124, MC511390, 355-53002, 21018891, 22683095, M4022, NM4022, MC390576, F141137, MC141137
