Dorman M39953 Brake Master Cylinder

Overview of Dorman Brake Master Cylinder M39953

The Dorman Brake Master Cylinder M39953 is designed for reliable brake hydraulics performance in select Ford and Mazda vehicles. This master cylinder includes a reservoir and sensor, engineered to meet the specific needs of models like the Ford Ranger and Mazda B2300.

• Master cylinder bore diameter: 1 inch
• Constructed from durable aluminum material
• Includes reservoir and sensor for integrated brake system monitoring
• Two outlet ports with precise thread specifications (M10 x 1.0 rearward outlet, M12 x 1.0 secondary outlet)
• Compatible with Ford B2300, B3000, B4000, Explorer, Ranger and Mazda Navajo models

Detailed Product Description

The Dorman M39953 brake master cylinder is crafted from aluminum to provide strength and corrosion resistance essential for brake hydraulics. Its 1-inch bore diameter supports consistent hydraulic pressure, while the included reservoir ensures proper brake fluid storage and flow. The integrated sensor allows for real-time monitoring of brake fluid levels, enhancing safety and maintenance awareness. Featuring two outlets with specific thread sizes (M10 x 1.0 and M12 x 1.0), this master cylinder is engineered to fit the brake systems of Ford and Mazda trucks and SUVs, including the Ford Ranger and Mazda Navajo.

Common Applications and Issues Addressed

• Restores proper brake fluid pressure in Ford Ranger and Mazda B2300 brake systems
• Replaces worn or leaking master cylinders causing brake pedal sponginess
• Solves brake fluid reservoir leaks with integrated reservoir design
• Addresses sensor failures that affect brake fluid level warnings
• Corrects hydraulic leaks due to damaged outlet threads or seals

Installation Notes and Tips

• Ensure compatibility with your specific Ford or Mazda model before installation
• Bleed the brake system thoroughly after installation to remove air pockets
• Use proper torque settings for M10 x 1.0 and M12 x 1.0 outlet fittings
• Check sensor connections for secure fit to maintain brake fluid monitoring
• Mounting hardware is not included; reuse existing hardware or source separately

Quality Assurance and Warranty

Dorman manufactures the M39953 brake master cylinder to meet or exceed OEM specifications for fit, form, and function. The aluminum construction and integrated sensor contribute to long-term durability and reliable brake system performance. While mounting hardware is not included, the product undergoes quality checks to ensure proper operation. Warranty coverage details should be confirmed through the product documentation or supplier.