Dorman M71265 Brake Master Cylinder

Reliable Brake Master Cylinder for Ford Bronco and F-100

The Dorman M71265 brake master cylinder is engineered to restore proper brake hydraulics in your Ford Bronco or F-100. Designed with durable cast iron and a 1-inch bore diameter, this master cylinder includes a reservoir to ensure consistent brake fluid supply.

• Master cylinder bore diameter: 1 inch for precise hydraulic pressure
• Constructed from cast iron for long-lasting durability
• Includes reservoir for brake fluid storage
• 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 M71265 brake master cylinder is specifically designed for brake hydraulics systems in Ford Bronco and F-100 models. Its cast iron construction provides strength and resistance to wear, while the 1-inch bore diameter ensures effective hydraulic pressure for reliable braking performance. The included reservoir maintains an adequate brake fluid level, supporting consistent brake operation. This master cylinder features two outlets, with a rearward outlet size of 1/2-20 and a secondary outlet thread diameter of 9/16-18, compatible with the brake lines on these vehicles.

Common Applications and Problem Resolution

• Restores brake pressure loss due to worn or leaking master cylinder
• Eliminates spongy or unresponsive brake pedal feel
• Replaces master cylinders with damaged or corroded cast iron bodies
• Addresses brake fluid reservoir leaks or contamination
• Resolves brake system failure caused by faulty hydraulic components

Installation Notes and Tips

Installation of the Dorman M71265 master cylinder requires proper brake system bleeding to remove air and ensure optimal performance. Note that mounting hardware is not included, so retain original fasteners or acquire compatible replacements. Verify outlet thread sizes (1/2-20 rearward and 9/16-18 secondary) to ensure correct brake line connections. It is recommended to inspect brake lines and related components during installation for any signs of wear or damage.

Quality Assurance and Warranty Information

Dorman manufactures the M71265 brake master cylinder to meet or exceed OEM specifications for Ford Bronco and F-100 vehicles. The cast iron material and precise bore diameter contribute to reliable brake system function. While mounting hardware is not included, the product undergoes quality checks to ensure fitment and durability. Please refer to Dorman's warranty policy for coverage details.