The Dorman - First Stop Brake Master Cylinder M56193 converts brake-pedal effort into the hydraulic pressure that operates the braking system, and it drops in as a direct-fit replacement for a wide range of classic AMC and Jeep vehicles — including the 1963-1972 AMC Ambassador, 1970-1976 AMC Gremlin and Hornet, 1970-1975 Jeep CJ5 and CJ6, and 1966-1973 Jeep Wagoneer. See the Buyer's Guide tab for the full list of 26 applications.
Engineered to match the design, function, and performance of the original master cylinder on the listed applications, its cast-iron housing is built to match the casting material of the original part for similar performance.
It features a 1 in bore diameter and two outlets, with a 1/2-20 secondary (rearward) outlet thread. The reservoir is included; a sensor and mounting hardware are not. Consult the vehicle service information for the correct fasteners and whether they may be reused. If a failed master cylinder is the cause of a sinking or spongy brake pedal, this replaces it. Country of origin: China.
Interchange: Manufacturer part number M56193.
What does this master cylinder do?
It converts the force you apply at the brake pedal into hydraulic pressure that operates the vehicle's braking system across its two outlets.
Does it come with a reservoir?
Yes, the reservoir is included. A sensor is not included, and mounting hardware is not included.
Is mounting hardware included?
No. Consult the vehicle service information for the correct fasteners and whether they may be reused.
Is this unit remanufactured?
No. It is 100% new, made entirely of new materials and not remanufactured, and it is made to meet SAE International standards.
What are the bore and outlet specs?
It has a 1 in bore diameter and two outlets, with a 1/2-20 secondary (rearward) outlet thread diameter. The housing is cast iron.
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.