Dorman M390393 Brake Master Cylinder

Reliable Brake Master Cylinder for Ford E-150 Models

The Dorman M390393 Brake Master Cylinder is engineered to restore proper brake hydraulics for Ford E-150, E-150 Club Wagon, E-150 Econoline, and E-150 Econoline Club Wagon vehicles. Designed with precision, this master cylinder ensures consistent brake fluid pressure and reliable stopping power.

• Compatible with Ford E-150, E-150 Club Wagon, E-150 Econoline, and E-150 Econoline Club Wagon
• Master cylinder bore diameter of 1.125 inches for accurate fluid displacement
• Constructed from durable aluminum material for corrosion resistance
• Includes reservoir and sensor for integrated brake system functionality
• Features three outlets with rearward outlet size M18 x 1.5 and secondary outlet thread diameters 9/16-18 & 3/8-24
• Mounting hardware not included

Product Details and Specifications

The Dorman M390393 brake master cylinder is crafted from aluminum, providing a lightweight yet sturdy component that resists corrosion and wear. Its 1.125-inch bore diameter is designed to deliver precise hydraulic pressure to the brake system. This master cylinder includes an integrated reservoir and sensor, allowing for seamless monitoring and fluid management. The unit features three outlets, including a rearward outlet sized M18 x 1.5 and secondary outlets with thread diameters of 9/16-18 and 3/8-24, ensuring compatibility with the brake lines on specified Ford E-150 models.

Common Applications and Problem Resolution

• Restores brake fluid pressure in Ford E-150 brake systems
• Replaces leaking or damaged master cylinders causing brake fluid loss
• Addresses brake pedal sponginess or failure due to internal cylinder wear
• Resolves sensor-related brake warning light issues with included sensor
• Improves overall brake system responsiveness and safety

Installation Notes and Tips

Installation of the Dorman M390393 master cylinder requires proper brake system bleeding to remove air and ensure optimal performance. Since mounting hardware is not included, retain original hardware or source compatible fasteners. Verify thread sizes for brake line connections: rearward outlet M18 x 1.5 and secondary outlets 9/16-18 and 3/8-24. It is recommended to inspect brake lines and related components during installation for wear or damage.

Quality Assurance and Warranty Information

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications for Ford E-150 models. The aluminum construction and integrated sensor contribute to long-term reliability. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. Consult product documentation or Dorman directly for exact warranty terms.