Turn pedal effort into hydraulic pressure for your brakes with the Dorman brake master cylinder M39453 from the First Stop line. It is a direct-fit replacement for the 1984-1987 Isuzu Pickup and 1984-1986 Isuzu Trooper (All engines), one per vehicle.
This Dorman master cylinder is precision-designed to replicate the original unit's design, function and performance on the listed applications. It is made from new, high-quality materials.
Specifications: aluminum master cylinder; 0.875 in bore diameter; 2 outlets; rearward outlet size M10 x 1.0; secondary outlet thread M10 x 1.0; primary outlet thread pitch 1 mm. The reservoir is included. Mounting hardware and a sensor are not included. Country of origin: Taiwan.
Signs that a master cylinder may need replacing include a soft or sinking brake pedal, fluid seeping at the cylinder, or a reservoir level that keeps dropping. Diagnose the brake system before replacing parts. Follow the vehicle service procedure for bleeding and installation.
Interchange: 783-10008 · 83-10008 · 100-2930 · M-50008 · 072-8458 · 13-2309 · 11-2309 · 130.43008 · 131.43008 · 355-37002
78310008 · 8310008 · 1002930 · M50008 · 0728458 · 132309 · 112309 · 13043008 · 13143008 · 35537002 · 18M243 · M900443 · 12145 · 12146 · MC109164 · 8941135821 · 8941135822 · 8941135823 · M52309 · NM52309 · MC391449 · F109164
This part cross-references / interchanges with the following part numbers:
Is a Dorman master cylinder bleeder kit included?
No. The package contents list only the master cylinder with its fluid reservoir, and mounting hardware and a sensor are not included either.
Which vehicles does M39453 fit?
It is listed for the 1984-1987 Isuzu Pickup and the 1984-1986 Isuzu Trooper, All engines. Each vehicle uses one master cylinder.
What is the bore size and outlet setup?
It has a 0.875-inch bore diameter and two outlets. The rearward outlet size and secondary outlet thread are both M10 x 1.0, and the primary outlet thread pitch is 1 mm.
What signs suggest a master cylinder may need replacing?
Common signs are a soft or sinking brake pedal, fluid leaking at the cylinder, or a falling reservoir level. Other brake components can cause the same symptoms, so diagnose the system first.
What is this master cylinder made of?
The master cylinder is aluminum. All of its rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
