Dorman M39297 Brake Master Cylinder

Overview of the Dorman Brake Master Cylinder M39297

The Dorman Brake Master Cylinder M39297 is designed to restore reliable brake hydraulics for vehicles requiring precise stopping power. Featuring a cast iron construction and dual bore diameters, this master cylinder supports consistent brake fluid pressure for safe vehicle operation.

• Cast iron master cylinder material for durability
• Dual bore diameters: 0.625 inch and 0.875 inch
• Includes reservoir for brake fluid
• Two outlets with rearward outlet size M10 x 1.0 and 10mm secondary outlet thread diameter
• Thread pitch of 1.0 for secure fitting
• Package contains master cylinder only; mounting hardware not included

Detailed Product Description

The Dorman M39297 brake master cylinder is engineered with a cast iron body to withstand the rigors of brake system pressure and heat. It features two bore diameters, 0.625 inch and 0.875 inch, which accommodate specific brake system requirements for balanced hydraulic pressure. The included reservoir allows for proper brake fluid storage and circulation, essential for maintaining brake responsiveness. With two outlets, including a rearward outlet sized M10 x 1.0 and a secondary outlet thread diameter of 10mm, this master cylinder ensures compatibility with a variety of brake line configurations. The thread pitch of 1.0 provides a secure and leak-resistant connection. This part is ideal for vehicles that require a reliable replacement brake master cylinder matching these specifications.

Common Applications and Issues Addressed

• Restores brake fluid pressure in vehicles with worn or leaking master cylinders
• Eliminates spongy or unresponsive brake pedal feel
• Prevents brake fluid leaks from damaged or corroded master cylinders
• Resolves inconsistent braking performance due to internal seal failure
• Supports brake system maintenance for vehicles with dual bore master cylinders

Installation Notes and Tips

• Ensure brake system is properly bled after installation to remove air
• Verify compatibility with vehicle brake line fittings, especially outlet thread sizes
• Mounting hardware is not included; reuse existing hardware or source separately
• Inspect brake fluid reservoir and lines for damage during installation
• Follow manufacturer torque specifications for outlet fittings and mounting bolts

Quality Assurance and Warranty

Dorman manufactures the M39297 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction and precise machining contribute to long service life and reliable brake system performance. While mounting hardware is not included, the master cylinder is designed for straightforward installation with compatible brake systems. Warranty coverage details should be confirmed with the point of purchase or Dorman directly.