Dorman M39422 Brake Master Cylinder

Reliable Brake Master Cylinder for Toyota Celica, Corona, and Pickup

The Dorman M39422 brake master cylinder is engineered to restore proper brake hydraulics for select Toyota models. Designed with durable cast iron and a precise 0.875-inch bore diameter, this master cylinder ensures consistent brake fluid pressure and reliable stopping power.

• Compatible with Toyota Celica, Corona, and Pickup models
• Master cylinder bore diameter: 0.875 inches
• Constructed from cast iron for durability
• Includes reservoir for brake fluid
• Two outlet ports with M10 x 1.0 rearward outlet thread size
• Thread pitch of 1.0 for secure fittings
• Part number M39422 for accurate identification

Product Details and Specifications

The Dorman M39422 brake master cylinder features a cast iron body that provides strength and resistance to wear under demanding braking conditions. Its 0.875-inch bore diameter is designed to match the hydraulic requirements of Toyota Celica, Corona, and Pickup vehicles, ensuring proper brake fluid displacement. This master cylinder includes a reservoir to hold brake fluid, eliminating the need for a separate component. It has two outlets, including a rearward outlet with a thread diameter of M10 x 1.0 and a thread pitch of 1.0, allowing for secure and leak-free connections to the brake lines. Note that mounting hardware is not included with this part.

Common Applications and Problem Resolution

• Restores brake fluid pressure for consistent braking performance
• Replaces worn or leaking master cylinders causing brake pedal issues
• Addresses brake fluid reservoir leaks or damage
• Fixes uneven brake pressure distribution between front and rear brakes
• Eliminates spongy or unresponsive brake pedal feel

Installation Notes and Tips

When installing the Dorman M39422 brake master cylinder, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. Verify compatibility with your Toyota Celica, Corona, or Pickup model year before installation. Use appropriate brake fluid and follow manufacturer torque specifications for outlet fittings. Since mounting hardware is not included, retain or source the necessary bolts and brackets for secure installation.

Quality Assurance and Warranty Information

Dorman manufactures this brake master cylinder to meet or exceed OEM standards for fit and function. The cast iron construction provides long-lasting durability under normal operating conditions. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship. Consult product documentation or the supplier for exact warranty terms related to part number M39422.