Dorman M39949 Brake Master Cylinder

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

The Dorman M39949 Brake Master Cylinder is engineered to restore proper brake hydraulics in select Ford, Mazda, and Mercury models. Designed with precision, this aluminum master cylinder includes a reservoir and sensor to ensure consistent brake performance.

• Master cylinder bore diameter: 0.875 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 M10 x 1.0 and thread pitch 1.0
• Compatible with Ford Escort, Mazda 323, MX-3, Protege, and Mercury Tracer

Product Details and Specifications

The Dorman M39949 master cylinder is designed to meet the exacting requirements of brake hydraulics systems in various Ford, Mazda, and Mercury vehicles. Its 0.875-inch bore diameter ensures proper fluid displacement, while the aluminum construction offers strength and resistance to wear and corrosion. The included reservoir allows for fluid storage, and the integrated sensor provides real-time feedback to the vehicle’s brake system. Featuring two outlets with a secondary outlet thread diameter of 10 mm and a rearward outlet size of M10 x 1.0, this master cylinder supports efficient brake fluid distribution. Note that mounting hardware is not included.

Compatible Vehicles and Applications

• Ford Escort models requiring a replacement brake master cylinder
• Mazda 323 and MX-3 vehicles with hydraulic brake systems
• Mazda Protege and Mercury Tracer models needing master cylinder repair

Common Issues Addressed by This Master Cylinder

• Brake pedal sinking or spongy feel due to internal leaks
• Brake fluid leaks around the master cylinder area
• Loss of hydraulic pressure causing reduced braking efficiency
• Warning lights triggered by faulty brake fluid sensors
• Inconsistent brake pedal response or travel

Installation Notes and Tips

Installation of the Dorman M39949 master cylinder requires proper brake system bleeding to remove air and ensure optimal performance. Since mounting hardware is not included, retain or source compatible bolts and fittings. Verify thread pitch and outlet sizes to match vehicle specifications. It is recommended to inspect brake lines and related components during installation for any signs of wear or damage.

Quality Assurance and Warranty

Dorman manufactures the M39949 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 should be confirmed at the point of purchase, Dorman products typically include limited warranties covering defects in material and workmanship.