Dorman M97938 Brake Master Cylinder

Reliable Brake Master Cylinder for Ford E-350 and F-350 Models

The Dorman M97938 brake master cylinder is engineered to restore proper brake hydraulics for Ford E-350 Econoline, E-350 Econoline Club Wagon, and F-350 vehicles. Designed with durable cast iron and a built-in reservoir, this master cylinder ensures consistent brake fluid delivery and system performance.

Key Features of the Dorman M97938 Brake Master Cylinder

• Master cylinder bore diameter: 1.063 inches for precise hydraulic pressure
• Constructed from cast iron for strength and durability
• Includes an integrated reservoir for brake fluid storage
• Two outlet ports with rearward outlet size of 3/8-24 inches and secondary outlet thread diameter of 7/16-24
• Compatible with Ford E-350 Econoline, E-350 Econoline Club Wagon, and F-350 models

Detailed Product Description

The Dorman M97938 brake master cylinder is a critical component in the brake hydraulics system, responsible for converting pedal force into hydraulic pressure. Its 1.063-inch bore diameter is designed to match OEM specifications, ensuring proper brake fluid displacement. The cast iron construction provides resistance to wear and corrosion, extending the service life of the part. This master cylinder comes with an integrated reservoir, eliminating the need for a separate fluid container and simplifying installation. Featuring two outlets, it supports dual-circuit brake systems commonly found in Ford E-350 Econoline and F-350 trucks, with outlet thread sizes tailored for secure brake line connections.

Common Applications and Issues Addressed

• Restores brake pressure loss due to worn or leaking master cylinders
• Eliminates spongy or unresponsive brake pedal feel
• Resolves brake fluid leaks from the master cylinder reservoir or outlets
• Addresses brake system failure caused by internal seal damage
• Replaces corroded or damaged cast iron master cylinders in Ford E-350 and F-350 models

Installation Notes and Tips

• Ensure brake system is properly bled after installation to remove air
• Verify compatibility with your specific Ford E-350 Econoline or F-350 model year
• Use appropriate brake fluid as specified by the vehicle manufacturer
• Inspect brake lines and fittings for wear or damage during replacement
• Do not reuse old mounting hardware; secure the master cylinder firmly to prevent leaks

Quality Assurance and Warranty Information

Dorman manufactures the M97938 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron material and precise bore diameter contribute to reliable brake system performance. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or the supplier for exact warranty terms.