Turn every press of the pedal into hydraulic pressure for the brakes with this Dorman brake master cylinder, part number M631008 from the Dorman - First Stop line. It is a direct-fit replacement for the 2005-2006 Pontiac GTO with all engines, precision-engineered so its design, function and performance match the original master cylinder on that application.
- Precise replacement: The aluminum cylinder housing is constructed to match the original part's casting material and is intended to deliver similar performance.
- Durable design: Every rubber component uses a high-quality EPDM compound that resists glycol-based brake fluid.
- 100% new: Made entirely from new, high-quality materials.
- Strict specifications: Built to meet rigorous SAE International standards.
The single reservoir, cap and sensor are included. Specs include two outlets, an M12 x 1.0 rearward outlet size, an M12 x 1.0 secondary outlet thread and two mounting holes. The push rod, brake booster, bleeder hoses, mounting bracket and mounting hardware are not included; consult the vehicle service information for the correct fasteners and the bleeding procedure. The package contains one new master cylinder.
A soft or sinking pedal, fluid leaking at the unit, or a brake warning light may be signs the master cylinder needs replacing. Other brake components can cause the same symptoms, so diagnose the system before replacing parts.
Country of origin: China.
Interchange: 100-3795 · 130.62143 · 355-52014
1741079 · 92121736 · NM4139 · MC391028 · 1003795 · 13062143 · 35552014
This part cross-references / interchanges with the following part numbers:
1741079, 100-3795, 130.62143, 355-52014, 92121736, NM4139, MC391028
