Rebuild your brake master cylinder and restore proper hydraulic sealing with the Dorman - First Stop Brake Master Cylinder Repair Kit TM59092. It drops in as a direct-fit repair kit for a wide range of classic GM applications, including the 1967 Pontiac Firebird, 1967-1970 Chevrolet Biscayne, Caprice, Impala and K20 Pickup, 1967-1976 Chevrolet Corvette, 1969-1970 Chevrolet Chevelle, 1971-1972 GMC Jimmy and many more. See the "Vehicles it fits" section for the full vehicle list.
The master cylinder converts brake-pedal force into the hydraulic pressure that operates the brakes. This kit supplies the sealing components needed to service that cylinder, so if worn internal seals are the cause of a sinking pedal or internal fluid bypass, this kit replaces them during a rebuild.
- Direct replacement: designed to match the original parts and hardware needed to repair the brake master cylinder on the listed vehicles.
- EPDM rubber components: made from quality EPDM rubber for reliable sealing.
- Bore size 1.125 in: sized for a 1.125 in master cylinder bore.
- Standard replacement grade backed by Dorman's U.S.-based product experts and over a century of automotive experience.
Country of origin: China.
Interchange: 22757 · MK536280 · 5463270 · 5468451 · MK-501 · MK501 · F106624
This part cross-references / interchanges with the following part numbers:
22757, MK536280, 5463270, 5468451, F106624, MK106624
Frequently Asked Questions
What does this kit do?
It supplies the sealing components needed to rebuild the brake master cylinder, which converts brake-pedal force into the hydraulic pressure that operates the brakes.
What is the bore size?
The kit is sized for a 1.125 in master cylinder bore, so confirm your master cylinder matches before ordering.
Will this fit my vehicle?
It's a direct-fit kit for many 1967-1976 Chevrolet, GMC and Pontiac models. Check the "Vehicles it fits" section to confirm your exact year, make and model.
What are the seals made of?
The kit's components are made from quality EPDM rubber for reliable sealing performance.
Signs the master cylinder may need service?
A slowly sinking brake pedal, spongy feel, or fluid loss without external leaks can indicate worn internal seals. Diagnose the cause before rebuilding.
