Dorman M39862 Brake Master Cylinder

Reliable Brake Master Cylinder for Dodge B-Series Trucks

The Dorman M39862 Brake Master Cylinder is engineered to provide consistent braking performance for Dodge B150, B250, B350, B1500, B2500, and B3500 models. Designed with durable aluminum construction and a built-in reservoir, this master cylinder ensures reliable hydraulic pressure for your vehicle's braking system.

• Master cylinder bore diameter: 1.125 inches for precise hydraulic control
• Constructed from aluminum for corrosion resistance and durability
• Includes reservoir for fluid storage and easy maintenance
• Two outlets with rearward outlet size 1/2-20 and secondary outlet thread diameter 9/16-18
• Package contains the master cylinder only; mounting hardware not included

Product Details and Specifications

The Dorman M39862 brake master cylinder is specifically designed for Dodge B-Series trucks, including B150, B250, B350, B1500, B2500, and B3500 models. Its 1.125-inch bore diameter allows for accurate hydraulic pressure delivery, essential for effective braking. The aluminum material offers resistance to corrosion and wear, extending the service life of the component. This master cylinder comes with an integrated reservoir, simplifying brake fluid management. It features two outlets: a rearward outlet sized at 1/2-20 and a secondary outlet with a 9/16-18 thread diameter, compatible with the brake lines on these Dodge trucks. Note that mounting hardware is not included, so ensure you have the necessary components for installation.

Common Applications and Problem Resolution

• Restores proper hydraulic pressure in the brake system
• Replaces leaking or damaged master cylinders causing brake fluid loss
• Addresses spongy or unresponsive brake pedal issues
• Fixes internal seal failures leading to brake performance degradation
• Supports brake system maintenance for Dodge B150, B250, B350, B1500, B2500, and B3500 trucks

Installation Notes and Tips

When installing the Dorman M39862 master cylinder, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. Since mounting hardware is not included, verify compatibility with existing brackets and fittings on your Dodge B-Series truck. Use the correct thread sizes for outlet connections: 1/2-20 for the rearward outlet and 9/16-18 for the secondary outlet. Follow manufacturer torque specifications to avoid damage during installation.

Quality Assurance and Warranty

Dorman manufactures the M39862 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated reservoir contribute to long-term reliability. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulics components. Consult product documentation or the supplier for exact warranty terms.