Dorman M390409 Brake Master Cylinder

Overview of the Dorman Brake Master Cylinder M390409

The Dorman Brake Master Cylinder M390409 is designed specifically for Ford Contour and Mercury Mystique models. This aluminum master cylinder provides reliable brake hydraulics performance without including mounting hardware or a reservoir, making it a direct replacement part for vehicles requiring a 1-inch bore diameter.

Key Features of the Dorman M390409 Brake Master Cylinder

• Constructed from durable aluminum for corrosion resistance and longevity
• 1-inch master cylinder bore diameter for precise hydraulic pressure
• Includes two outlets with M12 x 1.0 thread pitch for secure brake line connections
• Rearward outlet and secondary outlet both sized M12 x 1.0 for compatibility
• Package contains the master cylinder only; no reservoir or mounting hardware included
• Compatible with Ford Contour and Mercury Mystique models

Detailed Description and Specifications

The Dorman M390409 brake master cylinder is engineered to meet the exact specifications required by Ford Contour and Mercury Mystique vehicles. Its aluminum construction offers a balance of strength and weight savings, while the 1-inch bore diameter ensures consistent hydraulic pressure for effective braking. The master cylinder features two outlets, both with M12 x 1.0 thread pitch, allowing for secure and leak-free connections to the brake lines. This part does not include a reservoir or mounting hardware, so it is intended for installations where these components are reused or replaced separately.

Common Applications and Problem Resolution

• Restores proper brake fluid pressure in Ford Contour and Mercury Mystique brake systems
• Replaces worn or leaking master cylinders causing brake pedal sponginess or failure
• Addresses brake fluid leaks from damaged or corroded master cylinder bodies
• Solves issues related to inconsistent brake response or pedal travel
• Supports maintenance of brake hydraulics in vehicles with original equipment master cylinders

Installation Notes and Tips

• Ensure compatibility with your specific Ford Contour or Mercury Mystique model year before installation
• Use proper brake fluid and bleed the brake system thoroughly after installation to remove air
• Mounting hardware and reservoir must be sourced separately if replacement is needed
• Inspect brake lines and fittings for wear or damage during installation
• Follow manufacturer torque specifications for outlet fittings to prevent leaks

Quality Assurance and Warranty Information

Dorman manufactures the M390409 brake master cylinder to meet or exceed OEM standards for fit, form, and function. While mounting hardware and reservoir are not included, the master cylinder itself is built from high-quality aluminum to resist corrosion and wear. Warranty coverage details should be confirmed with the point of purchase or Dorman directly, as coverage may vary.