Dorman M630212 Brake Master Cylinder

Reliable Brake Master Cylinder for Volvo S60, S80, and V70

The Dorman M630212 Brake Master Cylinder is engineered to restore proper brake hydraulics for select Volvo models. Designed specifically for Volvo S60, S80, and V70 vehicles, this master cylinder ensures consistent brake fluid pressure and reliable stopping power.

Key Features of the Dorman M630212 Brake Master Cylinder

• Master cylinder bore diameter: 25 mm for precise hydraulic control
• Constructed from durable aluminum material for corrosion resistance
• Includes four outlets with M12 x 1.0 thread pitch for secure brake line connections
• Rearward outlet and secondary outlet both sized M12 x 1.0 for compatibility
• Package contains the master cylinder only; mounting hardware and reservoir are not included

Detailed Product Description

The Dorman M630212 brake master cylinder is a direct replacement part designed to meet the specifications of Volvo S60, S80, and V70 models. Its 25 mm bore diameter allows for accurate brake fluid displacement, which is critical for maintaining proper brake pedal feel and system responsiveness. Manufactured from aluminum, this master cylinder offers enhanced durability and resistance to corrosion compared to traditional cast iron units. The four outlet ports, all threaded with an M12 x 1.0 pitch, provide secure connections to the brake lines, ensuring leak-free operation. Note that this unit does not include a reservoir or mounting hardware, so those components must be reused or sourced separately.

Common Applications and Issues Addressed

• Restores brake hydraulic pressure in Volvo S60, S80, and V70 models
• Replaces master cylinders with worn or damaged bores causing brake pedal sponginess
• Solves brake fluid leaks from the master cylinder body or outlet threads
• Addresses inconsistent brake pedal travel or failure to build pressure
• Corrects master cylinder failures that trigger brake warning lights

Installation Notes and Tips

• Ensure compatibility with Volvo S60, S80, and V70 before installation
• Reuse existing reservoir and mounting hardware as these are not included
• Bleed the brake system thoroughly after installation to remove air
• Inspect brake lines and fittings for wear or damage during replacement
• Follow manufacturer torque specifications for outlet fittings to prevent leaks

Quality Assurance and Warranty Information

Dorman manufactures the M630212 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction provides long-lasting performance under normal operating conditions. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Consult product documentation or the supplier for exact warranty terms.