Swap out a worn or leaking Isuzu Pickup master cylinder with the Dorman First Stop Brake Master Cylinder M39782, a new, direct-fit replacement for the 1988-1989 Isuzu Pickup and 1989-1991 Isuzu Amigo (all engines). The master cylinder turns the force on the brake pedal into the hydraulic pressure that operates the brakes. Dorman designed this unit to match the original master cylinder's design, function and performance on the listed applications, and built it from new, high-quality materials.
- 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 from new materials, with quality and safety as the goal.
- Strict specifications: made to meet rigorous SAE International standards.
Specifications: 1 in bore diameter, two outlets, M10 x 1.0 rearward and secondary outlet threads, and a 1 mm primary outlet thread pitch. The reservoir and sensor are included. Mounting hardware is not included. Country of origin: Taiwan.
A master cylinder may need replacing if you notice a soft or sinking brake pedal, fluid leaking around the cylinder or reservoir, or a brake fluid level that keeps dropping. Other brake parts can cause the same signs, so diagnose the cause before replacing. Bench bleeding before installation is standard practice for a master cylinder; follow the vehicle service information.
Interchange: 072-8479 · 13-2503 · 11-2503 · 130.43017
0728479 · 132503 · 112503 · 13043017 · 18M430 · M900637 · 12501 · MC512450 · 94313439 · 8943134391 · 8943134392 · NM52503 · MC39782 · F119340 · MC119340
This part cross-references / interchanges with the following part numbers:
18M430, M900637, 072-8479, 12501, 13-2503, 11-2503, 130.43017, MC512450, 94313439, 8943134391, 8943134392, NM52503, MC39782, F119340, MC119340
