Turn pedal effort into hydraulic brake pressure with the Dorman - First Stop Brake Master Cylinder M12671; the package contains one master cylinder and no Dorman master cylinder bleeder kit, so have bench-bleed tools ready if your procedure calls for them. This Dorman brake master cylinder is a direct-fit replacement for the 1992-1996 Chevrolet C60 Kodiak, 1992-1996 GMC C6000 TopKick, 1997-2002 Chevrolet C6500 Kodiak, 1997-2002 GMC C7500 TopKick and 1997-2003 Isuzu FTR, among 19 listed applications (engine: All). See the Buyer's Guide tab for the full list. Dorman precision-engineered it to mirror the original master cylinder's design, function and performance on the listed applications. It is made from new, high-quality materials intended to provide a safe, durable replacement.
- Precise replacement: The cast-iron cylinder housing matches the casting 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 from new materials.
- Strict specifications: Built to meet rigorous SAE International standards.
Specifications: The bore diameter is 2 in. It has two outlets, and the secondary outlet thread is 1/2-20. The reservoir is included, and no sensor is included. Mounting hardware is not included, so consult the vehicle service information for the correct fasteners and whether the originals may be reused. Country of origin: China.
Signs a master cylinder may need replacing include a spongy or slowly sinking brake pedal and brake fluid seeping at the cylinder. Other brake faults can cause similar symptoms, so diagnose the cause first. If the original master cylinder is the problem, the M12671 replaces it.
Interchange: 174-870 · 83-58004 · 100-2789 · M-92004 · 13-8037 · 10-8037 · 130.82004 · 355-54304
18M870 · M901351 · 12671 · 15716128 · 19301987 · 8157161280 · 8193019870 · MC390565 · F128411 · F140746 · MC128411 · MC140746 · 174870 · 8358004 · 1002789 · M92004 · 138037 · 108037 · 13082004 · 35554304
This part cross-references / interchanges with the following part numbers:
174-870, 18M870, 83-58004, M901351, 100-2789, M-92004, 12671, 13-8037, 10-8037, 130.82004, 355-54304, 15716128, 19301987, 8157161280, 8193019870, MC390565, F128411, F140746, MC128411, MC140746
