Dorman M39714 Brake Master Cylinder

Reliable Brake Master Cylinder for Buick, Chevrolet, Oldsmobile, Pontiac

The Dorman M39714 brake master cylinder is engineered to restore proper brake hydraulics in select Buick, Chevrolet, Oldsmobile, and Pontiac models. Designed with precision, this master cylinder ensures consistent brake fluid pressure for safe and responsive braking performance.

• Master cylinder bore diameter: 24 mm for accurate hydraulic control
• Constructed from durable aluminum material for corrosion resistance
• Includes reservoir and sensor for complete brake system integration
• Equipped with four outlets to support complex brake line configurations
• Rearward outlet sizes: M10 x 1.0 and M12 x 1.0 for versatile fitment
• Secondary outlet thread diameters: M11 x 1.5 and M13 x 1.5

Technical Details and Compatibility

The Dorman M39714 brake master cylinder features a 24 mm bore diameter, providing precise hydraulic pressure control essential for effective braking. Its aluminum construction offers durability and resistance to corrosion, extending the service life of the component. This master cylinder comes complete with an integrated reservoir and sensor, facilitating seamless communication with the vehicle’s brake system. The unit includes four outlets with specific thread sizes (M10 x 1.0, M12 x 1.0, M11 x 1.5, and M13 x 1.5) to accommodate the brake lines of various configurations.

This part is compatible with multiple models including the Buick Regal, Chevrolet Lumina, Oldsmobile Cutlass Supreme, and Pontiac Grand Prix. The Dorman M39714 is designed to meet the exact specifications required for these vehicles, ensuring proper fit and function.

Common Applications and Problem Resolution

• Restores brake fluid pressure in vehicles experiencing soft or spongy brake pedal feel
• Replaces master cylinders with internal leaks or worn seals
• Addresses brake warning light activation due to sensor failure
• Solves issues related to brake fluid reservoir damage or contamination
• Improves braking response in vehicles with inconsistent pedal travel

Installation Notes and Tips

Installation of the Dorman M39714 brake master cylinder requires careful attention to brake line connections and sensor wiring. Ensure all brake lines are properly threaded to the specified outlet sizes (M10 x 1.0, M12 x 1.0, M11 x 1.5, M13 x 1.5) to prevent leaks. Bleed the brake system thoroughly after installation to remove air and restore optimal hydraulic pressure. Although mounting hardware is not included, the unit is designed to fit directly into the original mounting points of compatible Buick, Chevrolet, Oldsmobile, and Pontiac models.

Quality Assurance and Warranty

Dorman manufactures the M39714 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated sensor contribute to reliable performance under normal operating conditions. This part is backed by Dorman’s limited warranty, providing coverage against defects in material and workmanship for a specified period. Refer to Dorman’s warranty documentation for complete details.