Dorman M631081 Brake Master Cylinder

Brake Master Cylinder for Honda CR-V

This Dorman brake master cylinder is a direct replacement for specific 2017-2020 Honda CR-V models. Built with new materials and a 25.4 mm bore, it is engineered to match the original master cylinder’s design, function, and performance.

• Fits 2017-2020 Honda CR-V
• Dorman Part Number: M631081
• 25.4 mm bore diameter with straight bore type
• Single reservoir design with plastic reservoir material
• 2 mounting holes and 2 outlet ports
• Includes reservoir, cap, and gasket/seal
• Master cylinder material includes plastic, steel, rubber, and zinc components
• OE-style replacement for the original brake hydraulic unit

Detailed Product Overview

Designed for the 2017-2020 Honda CR-V, this brake master cylinder restores hydraulic pressure transfer from the brake pedal to the brake system. The unit uses a 25.4 mm bore, a single piston, and two flare outlets with M12 primary and secondary outlet threads at 1 mm pitch. Dorman M631081 is built as a replacement for the original master cylinder on the listed CR-V applications, and it cross-references Honda 1462TLAA00 for the same application.

Common Brake System Issues It Can Address

• Soft or inconsistent brake pedal feel
• Internal hydraulic leakage in the master cylinder
• Brake fluid loss around the master cylinder assembly
• Uneven brake pressure delivery to the hydraulic circuits
• Brake warning symptoms tied to master cylinder wear

Installation Notes and Tips

Verify the vehicle application before installation by matching the year, make, model, and outlet configuration. This unit includes a reservoir and cap, but does not include mounting hardware, dust boot, push rod, bleeder hoses, sensor, brake booster, or mounting bracket. Proper brake bleeding is required after installation to remove air from the hydraulic system and restore pedal firmness.

Quality Assurance

Dorman manufactures this master cylinder using new, high-quality materials and precision engineering to match the original part’s fit and function on the specified Honda CR-V applications. The design is intended to provide a durable replacement for the factory brake master cylinder.