Dorman M39461 Brake Master Cylinder

Brake Master Cylinder for OE-Style Replacement

Dorman M39461 is a brake master cylinder built to match the original design, function, and performance on specific vehicle applications. It uses new, high-quality materials and a cast iron body for a durable replacement in brake hydraulic service.

• Brake master cylinder for brake hydraulics service
• 1.5 in. bore diameter
• Cast iron master cylinder construction
• Reservoir included
• 1 outlet with 1/2-20 rearward outlet size
• Package contents: master cylinder
• Part number: M39461

Application Details

Use this master cylinder when servicing a vehicle brake system that requires an OE-style hydraulic replacement. Dorman M39461 is built for specific year, make, and model applications, including Ford F-150 and Ford Bronco fitments where the original master cylinder design calls for a 1.5-inch bore and a cast iron housing. The reservoir is included, and the single-outlet layout supports direct brake hydraulic replacement needs. This part cross-references Raybestos Brakes MC39461 for the same application.

What It Helps Fix

• Brake pedal that sinks under steady pressure
• Internal hydraulic leakage in the master cylinder
• Loss of brake fluid pressure at the outlet
• Brake warning symptoms tied to master cylinder wear
• Restoration of proper brake hydraulic response

Installation Notes

Verify bore diameter, outlet size, and reservoir configuration before installation. This unit does not include mounting hardware or a sensor. Bench bleeding the master cylinder before final installation helps reduce trapped air in the brake system and supports proper pedal feel after service.

Quality Assurance

Dorman engineers this brake master cylinder to match original equipment design and performance requirements for the listed applications. New materials and OE-style construction support a safe, durable replacement for brake system repair.