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Dorman - First Stop Brake Master Cylinder P/N:M39453
$85.99
Turn firm pedal pressure into the hydraulic braking force your vehicle needs with the Dorman - First Stop Brake Master Cylinder, part number M39453. This master cylinder converts the force you apply at the brake pedal into the hydraulic pressure that operates the brakes, and it drops in as a direct-fit replacement for the 1984-1987 Isuzu Pickup [All] and the 1984-1986 Isuzu Trooper [All]. Dorman precision-engineers it to match the design, function, and performance of the original master cylinder on the listed applications.
- 100% new: made entirely of new materials, not remanufactured.
- Aluminum housing: the cylinder housing is built to match the casting material of the original part for similar performance.
- Durable seals: the rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
- Built to spec: made to meet rigorous SAE International standards.
Specs include a 0.875 in bore diameter, two outlets, and M10 x 1.0 outlet threads (1 mm pitch). The reservoir is included; mounting hardware and a sensor are not included. Consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: Taiwan.
Manufacturer part number M39453.
This part cross-references / interchanges with the following part numbers:
18M243, 783-10008, 83-10008, M900443, 100-2930, M-50008, 072-8458, 12145, 12146, 13-2309, 11-2309, 130.43008, 131.43008, MC109164, 355-37002, 8941135821, 8941135822, 8941135823, M52309, NM52309, MC39453, F109164
Frequently Asked Questions
What does this brake master cylinder do?
It converts the force from your brake pedal into hydraulic pressure that is sent through the outlets to operate the vehicle's brakes.
Does it come with a reservoir?
Yes, the reservoir is included. Mounting hardware and a sensor are not included with this master cylinder.
Which vehicles does the M39453 fit?
It is a direct-fit replacement for the 1984-1987 Isuzu Pickup [All] and the 1984-1986 Isuzu Trooper [All]. See the Buyer's Guide tab to confirm your vehicle.
What are the key specifications?
It has a 0.875 in bore diameter, two outlets, and M10 x 1.0 outlet threads with a 1 mm pitch. The housing is aluminum.
What are signs this master cylinder may need replacing?
A brake pedal that slowly sinks under steady pressure, a low or soft pedal, or brake fluid loss may be signs. Diagnose the cause before replacing, as other parts can produce these symptoms.
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Dorman - First Stop Brake Master Cylinder P/N:M39453
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