Dorman - First Stop Brake Master Cylinder P/N:M630913

Turn every press of the brake pedal into hydraulic braking pressure with the Dorman First Stop Brake Master Cylinder M630913. It is a direct-fit replacement for the 2012-2020 Chevrolet Sonic, the 2013-2021 Buick Encore, and the 2014-2015 and 2018-2020 Chevrolet Trax (All engines). It is precision-engineered to replicate the original master cylinder's design, function and performance.

• Precise replacement: The cylinder housing is cast iron. It is built to match the casting material of the original part for similar performance.
• Durable design: Every rubber component uses a high-quality EPDM compound that resists glycol-based brake fluid.
• 100% new: Built entirely from new, high-quality materials.
• Strict specifications: Made to meet rigorous SAE International standards.

Specifications: 0.9375 in master cylinder bore diameter and 2 outlets. The rearward outlet size and the secondary outlet thread are both M12 x 1.0. The primary outlet thread pitch is 1 mm.

Package contents: One master cylinder. The reservoir, sensor and mounting hardware are not included. Transfer or replace the reservoir and sensor as the service procedure directs. Consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: China.

Signs this part may need replacing include a soft or sinking brake pedal and brake fluid leaking at the master cylinder. These symptoms can have other causes, so diagnose the brake system first. If a failed master cylinder is the cause, this unit replaces it.

Fitment: 2012-2020 Chevrolet Sonic (All); 2013-2021 Buick Encore (All); 2014-2015 Chevrolet Trax (All); 2018-2020 Chevrolet Trax (All). The listed applications use one master cylinder each.

Interchange: 174-1265 · 100-4031 · 10-4519 · 130.62177 · 355-47122
1741265 · 1004031 · 104519 · 13062177 · 35547122 · 95229905 · 95390404 · 95414483 · NM4287 · MC391526 · MC391548