Dorman M39950 Brake Master Cylinder

Reliable Brake Master Cylinder for Ford, Mazda, and Mercury Vehicles

The Dorman M39950 Brake Master Cylinder is engineered to restore proper brake hydraulics in select Ford, Mazda, and Mercury models. Designed with precision, this master cylinder includes a reservoir and sensor to ensure optimal brake system performance.

• Master cylinder bore diameter: 0.875 inches for precise hydraulic pressure
• Constructed from durable aluminum material for corrosion resistance
• Includes reservoir and sensor for integrated brake fluid management
• Features three outlets with a secondary outlet thread diameter of 10 mm
• Rearward outlet size: M10 x 1.0 with a thread pitch of 1.0 for secure connections
• Compatible with Ford Escort, Mazda 323, MX-3, Protege, and Mercury Tracer models

Detailed Product Description

The Dorman M39950 Brake Master Cylinder is a critical component in the brake hydraulics system, responsible for converting pedal force into hydraulic pressure. Its aluminum construction offers durability and resistance to corrosion, extending the service life of the part. The included reservoir allows for proper brake fluid storage, while the integrated sensor monitors fluid levels to maintain safety. With three outlets and precise thread specifications, this master cylinder ensures secure and reliable connections within the brake system.

Applications and Problem Solving

This master cylinder is designed for use in specific Ford, Mazda, and Mercury vehicles, including the Ford Escort, Mazda 323, MX-3, Protege, and Mercury Tracer. It addresses common brake system issues such as:

• Brake pedal sinking or sponginess due to internal leaks
• Brake fluid leaks from a worn or damaged master cylinder
• Inconsistent brake pressure affecting stopping performance
• Warning lights triggered by faulty brake fluid sensors
• Corrosion-related failures in older aluminum master cylinders

Installation Notes and Tips

Installation of the Dorman M39950 requires careful attention to brake system bleeding procedures to remove air and ensure proper hydraulic function. Note that mounting hardware is not included, so existing hardware should be inspected and replaced if necessary. Verify thread sizes and outlet connections to match vehicle specifications. It is recommended to consult the vehicle’s service manual for torque specifications and installation steps.

Quality Assurance and Warranty

Dorman manufactures the M39950 Brake Master Cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated sensor contribute to reliable brake system operation. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulics components. Refer to official Dorman documentation for warranty terms.