Dorman M390408 Brake Master Cylinder

Overview of Dorman Brake Master Cylinder for Dodge Durango

The Dorman M390408 brake master cylinder is designed specifically for Dodge Durango models, providing reliable brake hydraulics performance. This master cylinder features an aluminum construction and includes a reservoir, ensuring durability and efficient brake fluid management.

• Compatible with Dodge Durango vehicles
• Master cylinder bore diameter: 1.063 inches
• Constructed from durable aluminum material
• Includes reservoir for brake fluid
• Two outlet ports with specific thread sizes (M10 x 1.0 rearward, M12 x 1.0 secondary)
• Package contains the master cylinder only; mounting hardware not included

Detailed Product Features and Specifications

The Dorman M390408 brake master cylinder is engineered with a 1.063-inch bore diameter to provide precise hydraulic pressure for the braking system of Dodge Durango vehicles. Its aluminum construction offers corrosion resistance and long-lasting performance under demanding conditions. The included reservoir simplifies brake fluid storage and maintenance, while the two outlets with M10 x 1.0 and M12 x 1.0 thread sizes ensure compatibility with the vehicle’s brake lines. Note that this part does not include mounting hardware or sensors, focusing solely on the master cylinder assembly.

Common Applications and Problem Resolution

This brake master cylinder is used to replace worn or damaged units in Dodge Durango brake systems. It addresses several common issues, including:

• Brake pedal sinking or sponginess due to internal leaks
• Brake fluid leaks from a failing master cylinder
• Reduced braking efficiency caused by worn seals or bore damage
• Brake warning light activation related to master cylinder failure
• Inconsistent brake pressure affecting vehicle safety

Installation Notes and Tips

When installing the Dorman M390408 brake master cylinder on a Dodge Durango, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. Since mounting hardware is not included, retain or source the correct fasteners for secure installation. Verify thread sizes (M10 x 1.0 rearward outlet and M12 x 1.0 secondary outlet) to ensure proper brake line connections. Follow manufacturer torque specifications to avoid damage.

Quality Assurance and Warranty Information

Dorman manufactures this brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction supports corrosion resistance and durability. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulic components to cover defects in materials and workmanship.