Dorman - First Stop Brake Master Cylinder P/N:M631053
Put a fresh, 100% new master cylinder behind your brake pedal with the Dorman First Stop Brake Master Cylinder M36242, which converts pedal force into the hydraulic pressure that applies the brakes. It fits many vehicles, among them the 1962-1966 Chevrolet Impala, 1962-1966 Chevrolet Bel Air and 1962-1966 Chevrolet Biscayne. See the Buyer's Guide tab for the full list.
Dorman designed this master cylinder to match the design, function and performance of the original unit on the listed applications. It is built from new, high-quality materials for a safe, durable replacement.
Specifications: 0.875-inch bore diameter · one rearward outlet, sized 7/16-24 · reservoir included · mounting hardware and sensor not included. Country of origin: Taiwan.
A soft or sinking brake pedal, or brake fluid leaking at the cylinder, may be a sign the master cylinder needs replacing. Other brake problems can cause the same symptoms, so diagnose the cause first. Follow the vehicle service information for installation, the correct fasteners and bleeding the brake system.
Interchange: 83-36013 · 83-36014 · 83-50013 · 83-50014 · 100-2222 · M-82013 · M-82014 · 13-49221 · 10-49221 · 10-90372 · 130.62013 · 355-47030
8336013 · 8336014 · 8350013 · 8350014 · 1002222 · M82013 · M82014 · 1349221 · 1049221 · 1090372 · 13062013 · 35547030 · M900099 · 11268 · MC509590 · 2620441 · 384259 · 389024 · 5464275 · 5467005 · 5467025 · 5467345 · 5467918 · 9785438 · MC36242 · F49221 · MC49221
This part cross-references / interchanges with the following part numbers:
Will this Impala master cylinder fit my 1962-1966 Chevrolet Impala?
Yes. M36242 is listed as a direct-fit replacement for the 1962-1966 Chevrolet Impala, and also for the 1962-1966 Chevrolet Bel Air and Biscayne. Check the Buyer's Guide tab for other listed vehicles.
What does a brake master cylinder do?
It converts the force from the brake pedal into hydraulic pressure and sends brake fluid through the lines to the brakes.
What are the key specs of the Dorman M36242?
It has a cast iron housing, a 0.875-inch bore and one rearward outlet sized 7/16-24. Its rubber components use an EPDM compound that resists glycol-based brake fluid.
What comes in the box?
One master cylinder with the reservoir included. Mounting hardware and a sensor are not included, so consult the vehicle service information for the correct fasteners and whether they may be reused.
What signs may mean the master cylinder needs replacing?
A soft or sinking brake pedal, or brake fluid leaking at the cylinder, may be signs. Other brake problems can cause the same symptoms, so diagnose the cause before replacing it.
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.