Turn each press of the brake pedal into the hydraulic pressure that applies your brakes with the Dorman - First Stop Brake Master Cylinder M631027. It is a direct-fit replacement for the 2010-2016 Cadillac SRX (engine: All). Precision-engineered to mirror the original master cylinder's design, function and performance, it is made from new, high-quality materials for a safe, durable replacement.
- Precise replacement: the aluminum cylinder housing is built to match the material of the original part and is designed for similar performance.
- Durable design: every rubber component uses a high-quality EPDM compound that resists glycol-based brake fluid.
- 100% new: made entirely of new materials for quality and safety.
- Strict specifications: made to meet rigorous SAE International standards.
Specifications: 1.063 in bore diameter · 2 outlets · M12 x 1.0 rearward outlet size · M12 x 1.0 secondary outlet thread diameter · single reservoir · 2 mounting holes.
In the box: 1 master cylinder with reservoir, cap and sensor. The push rod, brake booster, bleeder hoses, mounting hardware and mounting bracket are not included. Country of origin: China.
Signs a master cylinder may need replacing: a soft, spongy or slowly sinking brake pedal, brake fluid seeping around the cylinder, or a brake fluid level that keeps dropping. Diagnose the cause before you replace the master cylinder. After installation, bleed the brake system as directed by the vehicle's service information.
Interchange: 100-4045 · 10-4342 · 130.62171
20819270 · NM4303 · MC146051 · 1004045 · 104342 · 13062171
This part cross-references / interchanges with the following part numbers:
100-4045, 10-4342, 130.62171, 20819270, NM4303, MC146051
