Dorman M37781 Brake Master Cylinder

Reliable Brake Master Cylinder for Ford Bronco and F-Series Trucks

The Dorman M37781 brake master cylinder is engineered to restore proper brake hydraulics in Ford Bronco, F-100, and F-250 models. Designed with durable cast iron and a 1-inch bore diameter, this master cylinder ensures consistent braking performance for your vehicle.

• Master cylinder bore diameter: 1 inch for precise hydraulic pressure
• Constructed from cast iron for long-lasting durability
• Includes reservoir for fluid storage and easy maintenance
• Two outlets with rearward outlet size of (2) 1/8-27 NPT for secure brake line connections
• Package contains the master cylinder only; mounting hardware not included

Product Details and Specifications

The Dorman M37781 brake master cylinder is specifically designed for select Ford models including the Bronco, F-100, and F-250. Its cast iron construction provides strength and resistance to wear, while the 1-inch bore diameter supports effective brake fluid pressure management. The included reservoir simplifies brake fluid monitoring and refilling. This master cylinder features two outlets with a rearward outlet size of (2) 1/8-27 NPT, compatible with standard brake line fittings. Note that mounting hardware is not included, so ensure you have the necessary components for installation.

Common Applications and Problem Resolution

• Restores brake hydraulic pressure in Ford Bronco and F-Series trucks
• Replaces worn or leaking master cylinders causing brake fluid loss
• Addresses spongy or unresponsive brake pedal issues
• Fixes brake fluid reservoir leaks or damage
• Improves overall brake system reliability and safety

Installation Notes and Tips

Before installation, verify compatibility with your specific Ford Bronco, F-100, or F-250 model year. Bleed the brake system thoroughly after replacing the master cylinder to remove air and ensure proper brake function. Since mounting hardware is not included, retain or acquire the correct bolts and fittings for secure installation. Follow manufacturer torque specifications to avoid damage.

Quality Assurance and Warranty Information

Dorman manufactures the M37781 brake master cylinder to meet or exceed OEM standards for fit and function. The cast iron material and precise bore diameter contribute to reliable brake system performance. While specific warranty details are not provided here, Dorman products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or the supplier for exact warranty terms.