Dorman M39388 Brake Master Cylinder

Reliable Brake Master Cylinder for Ford Bronco II and Ranger

The Dorman M39388 brake master cylinder is designed to restore proper brake hydraulics in your Ford Bronco II or Ranger. Engineered with durable cast iron and a built-in reservoir, this master cylinder ensures consistent brake fluid delivery for safe stopping performance.

Key Features of the Dorman M39388 Brake Master Cylinder

• Constructed from cast iron for strength and durability
• Includes an integrated reservoir for brake fluid
• Master cylinder bore diameter of 0.938 inches for precise hydraulic pressure
• Two outlet ports with rearward outlet size 9/16-18 and secondary outlet thread diameter 7/16-24
• Compatible with Ford Bronco II and Ranger models
• Package contains the master cylinder only; mounting hardware not included

Detailed Product Description

The Dorman M39388 brake master cylinder is a critical component in the brake hydraulics system of Ford Bronco II and Ranger vehicles. Its cast iron construction provides long-lasting resistance to wear and corrosion. The 0.938-inch bore diameter is designed to deliver consistent hydraulic pressure to the brake system, ensuring reliable brake pedal feel and stopping power. This master cylinder features two outlets, including a rearward outlet sized 9/16-18 and a secondary outlet with a 7/16-24 thread diameter, allowing proper connection to the brake lines. The included reservoir simplifies brake fluid management, although mounting hardware is not part of the package.

Common Applications and Issues Addressed

• Restores brake fluid pressure in Ford Bronco II and Ranger brake systems
• Replaces worn or leaking master cylinders causing brake pedal sponginess
• Solves brake fluid reservoir leaks or contamination problems
• Addresses inconsistent brake pedal response due to internal cylinder wear
• Improves overall brake system reliability and safety

Installation Notes and Tips

• Ensure compatibility with your specific Ford Bronco II or Ranger model year 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
• Inspect brake lines and fittings for wear or damage during installation
• Mounting hardware is not included; retain original hardware or source replacements as needed

Quality Assurance and Warranty

Dorman manufactures the M39388 brake master cylinder to meet or exceed OEM standards for fit and function. The cast iron construction and integrated reservoir are designed for durability and reliable performance. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in materials and workmanship. Verify warranty terms with the product documentation or supplier.