Dorman M134457 Brake Master Cylinder

Reliable Brake Master Cylinder for Ford E-Series Vehicles

The Dorman Brake Master Cylinder M134457 is engineered to restore proper brake hydraulics for select Ford E-Series models. Designed with precision, this master cylinder ensures consistent brake fluid pressure and reliable stopping power for your Ford E-150, E-250, E-250 Econoline, E-350 Club Wagon, E-350 Econoline Club Wagon, and E-350 Super Duty.

• Master cylinder bore diameter of 1.125 inches for accurate fluid displacement
• Durable aluminum construction for corrosion resistance and longevity
• Includes reservoir and sensor for complete brake system integration
• Two outlets with rearward outlet size 9/16-18 and secondary outlet thread diameter 7/16-24
• Compatible with Ford E-Series models including E-150, E-250, and E-350 variants

Product Details and Specifications

The Dorman M134457 brake master cylinder is crafted from aluminum, providing a lightweight yet robust component that resists corrosion and wear. Its 1.125-inch bore diameter is designed to deliver precise hydraulic pressure to your vehicle’s braking system. This unit comes complete with a reservoir and sensor, ensuring seamless integration with your Ford E-150 or E-350 brake hydraulics. Featuring two outlets, the master cylinder supports dual-circuit brake systems, with a rearward outlet size of 9/16-18 and a secondary outlet thread diameter of 7/16-24, matching OEM specifications for reliable fitment.

Compatible Ford E-Series Models

• Ford E-150
• Ford E-250
• Ford E-250 Econoline
• Ford E-350 Club Wagon
• Ford E-350 Econoline Club Wagon
• Ford E-350 Super Duty

Common Brake System Issues Addressed

• Spongy or unresponsive brake pedal
• Brake fluid leaks from the master cylinder
• Brake warning light activation due to sensor failure
• Uneven brake pressure causing pulling or dragging
• Loss of hydraulic pressure in dual-circuit brake systems

Installation Notes and Tips

Installation of the Dorman M134457 brake master cylinder requires proper brake fluid handling and bleeding procedures to avoid air in the brake lines. Ensure the mounting surface is clean and free of debris before installation. Although mounting hardware is not included, OEM hardware can be reused if in good condition. Verify sensor connections are secure to maintain brake system monitoring functionality. Professional installation is recommended for safety and optimal performance.

Quality Assurance and Warranty

Dorman manufactures the M134457 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and included sensor contribute to reliable brake system operation. While mounting hardware is not included, the product undergoes rigorous quality control to ensure durability. Warranty details are provided by Dorman and typically cover defects in material and workmanship under normal use.