Dorman M390392 Brake Master Cylinder

Reliable Brake Master Cylinder for Ford E-150 Models

The Dorman M390392 brake master cylinder is engineered to restore proper brake hydraulics in Ford E-150, E-150 Club Wagon, E-150 Econoline, and E-150 Econoline Club Wagon vehicles. Designed with precision, this aluminum master cylinder includes a reservoir and sensor to ensure consistent brake performance.

• Master cylinder bore diameter: 1.125 inches for accurate hydraulic pressure
• Constructed from durable aluminum material for corrosion resistance
• Includes reservoir and sensor for integrated brake system monitoring
• Two outlets with rearward outlet size 9/16-18 and secondary outlet thread diameter M18 x 1.5
• Thread pitch of 1.5 for secure fitting
• Mounting hardware not included

Detailed Product Features and Specifications

The Dorman M390392 brake master cylinder is designed specifically for Ford E-150 series vehicles, ensuring compatibility and reliable operation. Its 1.125-inch bore diameter provides the correct hydraulic pressure needed for effective braking. The aluminum construction offers durability and resistance to corrosion, extending the service life of the component. This master cylinder comes complete with a reservoir and sensor, allowing for seamless integration with the vehicle’s brake system and enabling accurate fluid level monitoring. Featuring two outlets, the unit supports dual-circuit brake systems with a rearward outlet size of 9/16-18 and a secondary outlet thread diameter of M18 x 1.5, both with a thread pitch of 1.5 to ensure a secure and leak-free connection.

Common Applications and Problem Resolution

• Restores brake pressure loss due to worn or damaged master cylinder
• Eliminates brake fluid leaks from faulty seals or cracks
• Resolves brake warning light issues related to sensor failure
• Improves brake pedal feel and responsiveness
• Replaces corroded or deteriorated aluminum master cylinders in Ford E-150 models

Installation Notes and Tips

Installation of the Dorman M390392 brake master cylinder requires proper brake system bleeding to remove air and ensure optimal performance. Since mounting hardware is not included, retain original fasteners or acquire compatible hardware before installation. Verify thread sizes and outlet fittings to match the vehicle’s brake lines. It is recommended to inspect related brake components during installation to maintain overall system integrity.

Quality Assurance and Warranty Information

Dorman brake master cylinders undergo rigorous testing to meet OEM standards for fit, form, and function. The M390392 part is backed by Dorman’s limited warranty, providing coverage against defects in material and workmanship. This ensures dependable performance and peace of mind when replacing the brake master cylinder on Ford E-150, E-150 Club Wagon, E-150 Econoline, and E-150 Econoline Club Wagon vehicles.