Dorman M390425 Brake Master Cylinder

Reliable Brake Master Cylinder for Chrysler, Dodge, and Plymouth

The Dorman M390425 Brake Master Cylinder is designed to restore proper brake function in select Chrysler, Dodge, and Plymouth vehicles. Engineered with an aluminum body and integrated reservoir, this master cylinder ensures consistent hydraulic pressure for safe braking performance.

• Master cylinder bore diameter: 0.875 inches for precise hydraulic control
• Constructed from durable aluminum material for corrosion resistance
• Includes reservoir and sensor for complete brake system integration
• Two outlet ports with 7/16-24 thread size for rearward and secondary outlets
• Compatible with Chrysler Breeze, Dodge Cirrus, Plymouth Sebring, and Dodge Stratus models

Product Details and Specifications

The Dorman M390425 brake master cylinder features a 0.875-inch bore diameter, which is critical for maintaining the correct hydraulic pressure within the brake system. Its aluminum construction offers enhanced durability and resistance to corrosion compared to traditional cast iron units. This master cylinder comes with an integrated reservoir and sensor, allowing for seamless monitoring of brake fluid levels and system status. The unit includes two outlets, both with 7/16-24 thread diameters, designed to connect securely to the brake lines. This part is specifically engineered for use in Chrysler Breeze, Dodge Cirrus, Plymouth Sebring, and Dodge Stratus vehicles, ensuring proper fitment and function.

Common Applications and Problem Resolution

• Restores brake pressure in vehicles experiencing soft or spongy brake pedal feel
• Replaces leaking or damaged master cylinders causing brake fluid loss
• Addresses brake warning light activation due to sensor or reservoir issues
• Improves brake system reliability in Chrysler Breeze, Dodge Cirrus, Plymouth Sebring, and Dodge Stratus
• Resolves inconsistent braking performance related to master cylinder wear

Installation Notes and Tips

Installation of the Dorman M390425 master cylinder requires proper brake fluid handling and bleeding procedures to remove air from the brake lines. Since mounting hardware is not included, retain original fasteners or source compatible hardware. Verify thread sizes (7/16-24) for brake line fittings to ensure secure connections. It is recommended to inspect related brake components during installation for optimal system performance.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications, providing reliable performance and durability. The part includes a sensor and reservoir to maintain system integrity. While mounting hardware is not included, the product undergoes quality checks to ensure fitment and function. Warranty coverage details can be obtained from the product documentation or manufacturer.