Dorman M39462 Brake Master Cylinder

Reliable Brake Master Cylinder Replacement

The Dorman M39462 brake master cylinder is engineered to restore proper brake hydraulics performance in compatible vehicles. Designed with a durable cast iron construction and a 1.75-inch bore diameter, this master cylinder ensures consistent brake fluid pressure for safe stopping power.

• Cast iron master cylinder material for durability
• Includes reservoir for brake fluid
• 1.75-inch bore diameter for precise hydraulic control
• Two outlet ports with rearward outlet size 3/4-18 and secondary outlet thread diameter 11/16-18
• Package contains the master cylinder unit only

Product Details and Specifications

The Dorman M39462 brake master cylinder features a cast iron body designed to withstand the rigors of brake system pressure and heat. Its 1.75-inch bore diameter is optimized for maintaining consistent hydraulic pressure, which is critical for effective brake pedal feel and stopping performance. This unit includes an integrated reservoir to hold brake fluid, eliminating the need for a separate component. The master cylinder has two outlets: a rearward outlet sized 3/4-18 and a secondary outlet with an 11/16-18 thread diameter, allowing compatibility with various brake line configurations. Note that mounting hardware is not included with this part.

Compatible Vehicles and Applications

This brake master cylinder is suitable for replacement in vehicles requiring a 1.75-inch bore diameter master cylinder with the specified outlet sizes. It is commonly used in brake hydraulic systems of select makes and models where Dorman parts are recommended. For example, it is compatible with certain Ford F-150, Chevrolet Silverado, and Dodge Ram models that specify these dimensions and thread sizes. Always verify fitment with your vehicle's specifications before purchase.

Common Brake System Issues Addressed

• Spongy or unresponsive brake pedal
• Brake fluid leaks from the master cylinder
• Brake warning light activation due to fluid level issues
• Reduced braking efficiency or inconsistent pedal pressure
• Master cylinder internal seal failure causing brake drag or loss of pressure

Installation Notes and Tips

When installing the Dorman M39462 master cylinder, ensure the brake system is properly bled to remove air and restore hydraulic pressure. Use compatible brake fluid as specified by the vehicle manufacturer. Since mounting hardware is not included, retain or source the correct bolts and fittings for secure installation. Inspect brake lines and connections for wear or damage during replacement to maintain system integrity.

Quality Assurance and Warranty

Dorman brake master cylinders are manufactured to meet or exceed OEM standards for fit, form, and function. The M39462 part undergoes rigorous quality control to ensure reliable performance in brake hydraulic systems. Please consult Dorman's warranty policy for specific coverage details related to this master cylinder.