Dorman M390615 Brake Master Cylinder

Reliable Brake Master Cylinder for Mercury Quest and Nissan Villager

The Dorman M390615 brake master cylinder is engineered to restore proper brake hydraulics in your Mercury Quest or Nissan Villager. Designed with precision, this aluminum master cylinder ensures consistent brake fluid pressure for safe and effective braking performance.

• Master cylinder bore diameter: 1 inch for accurate fluid displacement
• Constructed from durable aluminum material for corrosion resistance
• Includes two outlets with a rearward outlet size of M10 x 1.0 and thread pitch of 1.0
• Does not include reservoir or mounting hardware, allowing compatibility with existing components
• Secondary outlet thread diameter: 10 mm for secure brake line connections
• Package contains the master cylinder only, part number M390615

Product Details and Specifications

The Dorman M390615 brake master cylinder is designed specifically for brake hydraulics systems in Mercury Quest and Nissan Villager models. Its 1-inch bore diameter provides precise control over brake fluid pressure, essential for maintaining consistent braking response. Manufactured from aluminum, this master cylinder offers resistance to corrosion and wear, contributing to long-term reliability. The unit features two outlets, including a rearward outlet sized M10 x 1.0 with a 1.0 thread pitch, ensuring compatibility with standard brake lines. Note that this part does not include a reservoir or mounting hardware, making it suitable for installations where these components are already in place or replaced separately.

Common Applications and Problem Resolution

• Restores brake fluid pressure in Mercury Quest and Nissan Villager brake systems
• Replaces worn or leaking master cylinders causing brake pedal sponginess
• Addresses brake fluid leaks from damaged or corroded master cylinders
• Improves brake system responsiveness and safety
• Suitable for vehicles experiencing inconsistent brake pedal feel

Installation Notes and Tips

When installing the Dorman M390615 brake master cylinder, ensure the brake fluid reservoir and mounting hardware are compatible and in good condition, as these are not included. Properly bleed the brake system after installation to remove air and restore optimal brake performance. Verify thread sizes and outlet connections match your vehicle’s brake lines to avoid leaks. It is recommended to consult the vehicle’s service manual for torque specifications and installation procedures specific to Mercury Quest and Nissan Villager models.

Quality Assurance and Warranty Information

Dorman manufactures the M390615 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction provides durability and corrosion resistance under normal operating conditions. While specific warranty details are not provided here, Dorman typically offers limited warranties covering defects in materials and workmanship. For exact warranty terms, refer to Dorman’s official documentation or contact authorized distributors.