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Dorman - First Stop Brake Master Cylinder P/N:M39782
$167.99
Turn firm brake-pedal force into the hydraulic pressure that operates the brakes with the Dorman - First Stop Brake Master Cylinder M39782. It fits as a direct-fit replacement for the 1988-1989 Isuzu Pickup and the 1989-1991 Isuzu Amigo (All engines), precision-built to match the design, function and performance of the original master cylinder on those applications.
- 100% new: made entirely of new materials, not remanufactured, for consistent quality and safety.
- Aluminum housing: the cylinder housing is cast to match the casting material of the original part for similar performance.
- EPDM rubber components: all rubber parts use a high-quality EPDM compound for resistance to glycol-based brake fluid.
- Built to spec: made to meet rigorous SAE International standards; 1 in bore with two outlets, and a rearward/secondary outlet size of M10 x 1.0.
This unit includes the reservoir and sensor. Mounting hardware is not included, so consult the vehicle service information for the correct fasteners and whether they may be reused. If a failing master cylinder is the cause of a sinking or spongy pedal, this replaces it. Country of origin: Taiwan.
Interchange: 18M430 · M900637 · 072-8479 · 0728479 · 12501 · 13-2503 · 132503 · 11-2503 · 112503 · 130.43017 · MC512450 · 94313439 · 8943134391 · 8943134392 · NM52503 · MC39782 · F119340 · MC119340 · Manufacturer part number M39782.
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
Frequently Asked Questions
Which vehicles does the M39782 master cylinder fit?
It's a direct-fit replacement for the 1988-1989 Isuzu Pickup and the 1989-1991 Isuzu Amigo (All engines). See the Buyer's Guide tab to confirm your vehicle.
Does it include a reservoir and a sensor?
Yes. Per the catalog, the reservoir and sensor are both included with this master cylinder.
Is mounting hardware included?
No. Mounting hardware is not included. Consult the vehicle service information for the correct fasteners and whether they may be reused.
Is this new or remanufactured?
It is 100% new, made entirely of new materials rather than remanufactured, and built to meet SAE International standards.
What are signs the master cylinder may need replacing?
A brake pedal that slowly sinks, feels spongy, or fluid loss can be signs. Diagnose the cause first; if the master cylinder is at fault, this replaces it.
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Dorman - First Stop Brake Master Cylinder P/N:M39782
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