Dorman M39860 Brake Master Cylinder

Reliable Brake Master Cylinder Replacement for Your Vehicle

The Dorman M39860 brake master cylinder is engineered to restore proper brake hydraulics in compatible vehicles. Designed with a durable cast iron construction and a 1.375-inch bore diameter, this master cylinder ensures consistent brake fluid pressure for safe stopping performance.

• Cast iron master cylinder material for durability and strength
• 1.375-inch bore diameter optimized for precise hydraulic control
• Single outlet design with a 7/16-24 rearward outlet size
• Includes master cylinder only; reservoir and sensor not included
• Compatible with specific vehicle makes and models requiring this part number

Product Details and Specifications

The Dorman M39860 brake master cylinder is constructed from cast iron, providing a robust and long-lasting component for your vehicle's brake system. Its 1.375-inch bore diameter is designed to deliver the correct hydraulic pressure needed for effective braking. This master cylinder features a single outlet with a rearward outlet size of 7/16-24, suitable for certain brake hydraulic configurations. Note that this product does not include a reservoir or sensor, and mounting hardware is not provided.

Common Applications and Problem Resolution

• Restores brake fluid pressure in vehicles experiencing spongy or unresponsive brakes
• Replaces worn or leaking master cylinders causing brake fluid loss
• Addresses brake pedal sinking or failure to maintain pressure
• Solves issues related to inconsistent brake pedal feel
• Prevents brake system failure due to internal cylinder wear

Installation Notes and Tips

When installing the Dorman M39860 master cylinder, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. Verify compatibility with your vehicle’s make and model before installation. Since the reservoir and sensor are not included, reuse existing components or replace separately if needed. Proper torque specifications should be followed to avoid leaks or damage.

Quality Assurance and Warranty Information

Dorman manufactures this brake master cylinder to meet or exceed OEM standards for fit and function. While specific warranty details are not provided here, Dorman products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.