Turn brake-pedal effort into hydraulic pressure for the wheel brakes with the Dorman brake master cylinder M39589 from Dorman - First Stop. It is a direct-fit replacement for the 1981-1986 Chevrolet C10 and GMC C1500, the 1987-1988 Chevrolet R10 Suburban and V10 Suburban, and the 1989-1991 Chevrolet and GMC R1500 Suburban and V1500 Suburban. It also fits the 1987 models in the list below.
This new unit is precision-engineered to match the original master cylinder's design, function and performance on the listed applications. It is a stepped-bore master cylinder with 36 mm and 24.4 mm bores, designed to supply different fluid volumes to specific parts of the brake circuit.
- Precise replacement: The aluminum cylinder housing is constructed to match 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 of new materials for quality and safety.
- Strict specifications: Made to meet rigorous SAE International standards.
Specifications: 2 outlets · rearward outlet size 1/2-20 in. · reservoir included · sensor not included · mounting hardware not included · package contents: one master cylinder · country of origin: China.
Consult the vehicle service information for bench-bleeding and brake-system bleeding procedures, and for the correct mounting fasteners.
Fitment (engine: All for every application):
- 1981-1986 Chevrolet C10
- 1981-1986 GMC C1500
- 1987 Chevrolet R10
- 1987 Chevrolet V10
- 1987-1988 Chevrolet R10 Suburban
- 1987-1988 Chevrolet V10 Suburban
- 1987 GMC R1500
- 1987 GMC V1500
- 1989-1991 Chevrolet R1500 Suburban
- 1989-1991 Chevrolet V1500 Suburban
- 1989-1991 GMC R1500 Suburban
- 1989-1991 GMC V1500 Suburban
Interchange: 83-44009 · 100-2585 · M-86009 · 13-1889 · 10-1889 · 130.66009 · 131.66009 · 355-48001
8344009 · 1002585 · M86009 · 131889 · 101889 · 13066009 · 13166009 · 35548001 · 18M325 · M900531 · 11889 · MC104466 · 18007971 · 18013434 · 104466 · NM1889 · MC39589 · F104466
This part cross-references / interchanges with the following part numbers:
18M325, 83-44009, M900531, 100-2585, M-86009, 11889, 13-1889, 10-1889, 130.66009, 131.66009, MC104466, 355-48001, 18007971, 18013434, 104466, NM1889, MC39589, F104466
