Dorman M390394 Brake Master Cylinder

Reliable Brake Master Cylinder for Ford E-250 and E-350 Econoline

The Dorman M390394 brake master cylinder is engineered to restore proper brake hydraulics for Ford E-250 Econoline, E-350 Econoline, and E-350 Econoline Club Wagon models. Designed with precision, this master cylinder ensures consistent brake fluid pressure and reliable stopping power.

Key Features of the Dorman M390394 Brake Master Cylinder

• Master cylinder bore diameter of 1.25 inches for accurate fluid displacement
• Constructed from durable aluminum material for corrosion resistance and longevity
• Includes an integrated reservoir for brake fluid storage
• Equipped with a sensor to monitor brake fluid levels and system status
• Three outlets to support complex brake hydraulic systems
• Rearward outlet size: M18 x 1.5 thread specification
• Secondary outlet thread diameters: 9/16-18 and 3/8-24 for versatile brake line connections
• Package contains the master cylinder unit only; mounting hardware is not included

Detailed Description of the Dorman M390394 Brake Master Cylinder

This brake master cylinder is specifically designed for Ford E-250 Econoline, E-350 Econoline, and E-350 Econoline Club Wagon vehicles, providing a direct replacement for the original equipment. The aluminum construction offers a balance of strength and corrosion resistance, essential for maintaining brake system integrity over time. The 1.25-inch bore diameter ensures proper hydraulic pressure is generated to activate the braking system effectively. The included reservoir and sensor help maintain optimal brake fluid levels and alert drivers to potential issues, enhancing safety. With three outlets and multiple thread sizes, this master cylinder accommodates the complex brake line configurations found in these Ford Econoline models.

Common Brake Issues Addressed by This Master Cylinder

• Brake pedal sinking or sponginess due to internal leaks
• Brake fluid leaks from a worn or damaged master cylinder
• Inconsistent brake pressure causing uneven braking performance
• Brake warning light activation related to fluid level sensor faults
• Failure of the original master cylinder leading to reduced braking efficiency

Installation Notes and Tips

• Ensure compatibility with Ford E-250 Econoline, E-350 Econoline, and E-350 Econoline Club Wagon before installation
• Bleed the brake system thoroughly after installation to remove air and ensure proper hydraulic function
• Use appropriate brake fluid as specified by the vehicle manufacturer
• Mounting hardware is not included; retain original hardware or source compatible replacements
• Inspect brake lines and fittings for wear or damage during installation

Quality Assurance and Warranty Information

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications for fit, form, and function. The aluminum construction and integrated sensor contribute to reliable performance under normal operating conditions. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. Refer to the product documentation or manufacturer website for exact warranty terms.