Dorman M630839 Brake Master Cylinder

Reliable Brake Master Cylinder for Chrysler, Dodge, and Ram Vehicles

The Dorman M630839 brake master cylinder is engineered to provide consistent hydraulic pressure for your vehicle's braking system. Designed specifically for Chrysler, Dodge, and Ram models including the C/V, Grand Caravan, and Town & Country, this master cylinder ensures precise brake control and safety.

• Master cylinder bore diameter: 1.063 inches for accurate hydraulic performance
• Constructed from durable aluminum material for corrosion resistance and longevity
• Includes two outlets with 7/16-24 thread diameter for rearward and secondary connections
• Does not include reservoir or sensor, allowing compatibility with existing components
• Package contains the master cylinder only, no mounting hardware included

Technical Details and Compatibility

The Dorman M630839 brake master cylinder features a 1.063-inch bore diameter, which is critical for maintaining proper brake fluid pressure and pedal feel. Its aluminum construction offers a balance of strength and corrosion resistance, suitable for the demanding conditions of brake hydraulics. The unit includes two outlets, both with 7/16-24 thread sizes, designed to connect seamlessly with the brake lines on compatible Chrysler, Dodge, and Ram vehicles. This part is compatible with models such as the Chrysler C/V, Dodge Grand Caravan, and Ram Town & Country, making it a direct replacement for worn or damaged master cylinders in these vehicles.

Common Applications and Problem Resolution

• Restores proper brake pedal pressure and responsiveness
• Eliminates brake fluid leaks caused by worn or damaged master cylinders
• Addresses spongy or inconsistent brake pedal feel
• Prevents brake system failure due to internal cylinder wear
• Supports safe braking performance in Chrysler, Dodge, and Ram vans and minivans

Installation Notes and Tips

When installing the Dorman M630839 brake master cylinder, ensure the brake fluid reservoir and sensors are compatible and in good condition, as this unit does not include those components. Properly bleed the brake system after installation to remove air and restore hydraulic pressure. Verify that the 7/16-24 outlet threads match your vehicle’s brake line fittings for a secure connection. Professional installation is recommended to maintain brake system integrity and safety.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications, using quality aluminum material for durability. While mounting hardware and reservoir are not included, the part is designed for reliable performance in specified Chrysler, Dodge, and Ram models. Please refer to Dorman’s warranty policy for coverage details on the M630839 brake master cylinder.