Add to Cart
The item has been added
Dorman - First Stop Brake Master Cylinder P/N:M101258
$71.99
Convert brake-pedal force into the hydraulic pressure that operates your brakes with the Dorman - First Stop Brake Master Cylinder M101258. It drops in as a direct-fit replacement for the 1976-1979 Cadillac Seville, 1977-1979 Buick Electra, 1977-1979 Buick Estate Wagon, 1977-1980 Buick LeSabre, 1977-1978 Buick Riviera, 1977-1979 Cadillac DeVille, 1977-1979 Cadillac Fleetwood and 1979-1980 Pontiac Firebird [All engines].
- Cast-iron housing: the cylinder housing is constructed to match the casting material of the original part for similar performance.
- Key specs: 1.125 in bore, two outlets and a 1/2-20 secondary outlet thread.
- What's included: the reservoir is included; no sensor is included and mounting hardware is not included.
- 100% new: made entirely of new materials, not remanufactured, with EPDM rubber components that resist glycol-based brake fluid, and built to meet SAE International standards.
Built to reproduce the design, function, and performance of the factory master cylinder on the listed applications. If a worn or leaking master cylinder is the cause of a sinking or spongy pedal, this replaces it. Country of origin: China.
Interchange: 174-510 · 174510 · 18M80 · 783-36002 · 78336002 · 83-36002 · 8336002 · 83-50002 · 8350002 · M900241 · 100-2207 · 1002207 · M-82002 · M82002 · 11745 · 13-1745 · 131745 · 10-1745 · 101745 · 130.62002 · 131.62002 · MC101258 · 355-45000 · 35545000 · 18002067 · 18005285 · 18009576 · 101258 · M1745 · NM1745 · MC39028 · F101258 · Manufacturer part number M101258
This part cross-references / interchanges with the following part numbers:
174-510, 18M80, 783-36002, 83-36002, 83-50002, M900241, 100-2207, M-82002, 11745, 13-1745, 10-1745, 130.62002, 131.62002, MC101258, 355-45000, 18002067, 18005285, 18009576, 101258, M1745, NM1745, MC39028, F101258
Frequently Asked Questions
What does this brake master cylinder do?
It converts brake-pedal force into hydraulic pressure and sends it through its two outlets to the brake circuits. This part is 100% new, not remanufactured.
Does it fit my vehicle?
It's a direct-fit replacement for several 1976-1980 GM cars, including the Cadillac Seville, Buick Electra, LeSabre, Riviera and Pontiac Firebird. See the Buyer's Guide tab for the full year-by-model list.
Is a reservoir included, and what's in the box?
Yes, the reservoir is included. The package contains the master cylinder; mounting hardware is not included, and no sensor is included.
What are the bore size and materials?
It has a 1.125 in bore, two outlets and a 1/2-20 secondary outlet thread, with a cast-iron cylinder housing and EPDM rubber components that resist glycol-based brake fluid.
What are signs the master cylinder may need replacing?
Signs may include a slowly sinking or spongy brake pedal and brake-fluid leaks. Diagnose the cause first, since these symptoms can have other sources.
Write a Review
Dorman
Dorman - First Stop Brake Master Cylinder P/N:M101258
Related Products