Dorman M390108 Brake Master Cylinder

Reliable Brake Master Cylinder for Ford and Mazda Vehicles

The Dorman M390108 brake master cylinder is engineered to provide consistent hydraulic pressure for your vehicle's braking system. Designed specifically for select Ford and Mazda models, this master cylinder ensures precise brake fluid control and improved safety on the road.

• Master cylinder bore diameter: 0.938 inches for accurate hydraulic performance
• Constructed from durable aluminum material for corrosion resistance and longevity
• Includes reservoir for brake fluid storage and monitoring
• Equipped with a sensor to support brake system diagnostics
• Features three outlets with a secondary outlet thread diameter of 10 mm and rearward outlet size M10 x 1.0
• Thread pitch of 1.0 for secure and proper fitting

Product Details and Specifications

The Dorman M390108 brake master cylinder is designed with an aluminum body that offers strength and resistance to wear, making it suitable for the demanding conditions of brake hydraulics. The 0.938-inch bore diameter ensures the correct volume and pressure of brake fluid is delivered to the braking system. This unit includes a reservoir, allowing for easy fluid level monitoring and maintenance. The integrated sensor supports vehicle brake system monitoring, helping to detect issues early. With three outlets, including a secondary outlet with a 10 mm thread diameter and a rearward outlet sized M10 x 1.0, this master cylinder is compatible with specific brake line configurations found in Ford 626, Mazda MX-6, and Ford Probe models.

Compatible Vehicles and Applications

This brake master cylinder is compatible with the following vehicles:

• Ford 626
• Mazda MX-6
• Ford Probe

It is designed to replace the original equipment part and restore proper brake hydraulic function in these models.

Common Issues Addressed by This Master Cylinder

• 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
• Brake warning light activation related to sensor faults
• Reduced braking efficiency caused by reservoir or outlet failures

Installation Notes and Tips

Installation of the Dorman M390108 brake master cylinder requires careful attention to brake line connections and proper bleeding of the brake system to remove air. Ensure the thread pitch of 1.0 matches the vehicle’s brake line fittings. Since mounting hardware is not included, retain original fasteners or source compatible hardware. Verify sensor connections are secure to maintain brake system diagnostics functionality.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. This brake master cylinder undergoes rigorous quality control to ensure proper fit and function. Please refer to Dorman’s warranty policy for specific coverage details.