Turn pedal effort into hydraulic pressure for the brakes with the Dorman First Stop Brake Master Cylinder M630021, a new aluminum master cylinder that comes with its reservoir. It fits many vehicles, among them the 1998-2000 Chevrolet Blazer, 1998-1999 Chevrolet S10 and 1998-1999 GMC Jimmy, as a direct-fit replacement for the listed applications. See the Buyer's Guide tab for the full list.
Dorman precision-engineers this unit to mirror the design, function and performance of the original master cylinder on the listed applications. It is built from new, high-quality materials for a safe, durable replacement.
- Precise replacement: the aluminum housing is constructed to match the material of the original part for similar performance.
- Durable design: every rubber component uses a high-quality EPDM compound that resists glycol-based brake fluid.
- 100% new: made entirely of new materials for quality and safety.
- Strict specifications: built to meet rigorous SAE International standards.
Specifications: 1 in bore diameter · 2 outlets · 1/2-20 rearward outlet size · reservoir included · sensor not included · mounting hardware not included. Country of origin: China.
A spongy or sinking brake pedal, fluid seeping from the cylinder, or a falling reservoir level are signs a master cylinder may need replacing. Diagnose the brake system before ordering, because other parts can cause similar symptoms.
Interchange: 174-750 · 100-2626 · M-86037 · 13-2866 · 10-2866 · 130.66037 · 355-47165
174750 · 1002626 · M86037 · 132866 · 102866 · 13066037 · 35547165 · 18M937 · M901145 · 13544 · MC500110 · 18026274 · 8180262740 · M3068 · M3097 · NM3068 · NM3097 · MC390427 · F140131 · MC140131
This part cross-references / interchanges with the following part numbers:
174-750, 18M937, M901145, 100-2626, M-86037, 13544, 13-2866, 10-2866, 130.66037, MC500110, 355-47165, 18026274, 8180262740, M3068, M3097, NM3068, NM3097, MC390427, F140131, MC140131
