Dorman M49212 Brake Master Cylinder

Reliable Brake Master Cylinder for Buick, Oldsmobile, and Pontiac

The Dorman M49212 brake master cylinder is designed to restore proper brake hydraulics in select Buick, Oldsmobile, and Pontiac vehicles. Engineered with cast iron construction and a 1-inch bore diameter, this master cylinder ensures consistent brake fluid pressure for safe stopping performance.

• Cast iron master cylinder material for durability
• Includes reservoir for brake fluid containment
• Single outlet design with 7/16-24 rearward outlet size
• Compatible with Buick Cutlass, Oldsmobile Cutlass, Pontiac GTO, LeMans, Skylark, and Tempest models
• Part number M49212 for precise replacement

Product Features and Specifications

The Dorman M49212 master cylinder features a 1-inch bore diameter, which is critical for maintaining proper hydraulic pressure in the brake system. Its cast iron construction provides strength and resistance to wear, ensuring long-term reliability. This unit comes with an integrated reservoir to hold brake fluid, eliminating the need for a separate component. The master cylinder has one outlet with a rearward outlet size of 7/16-24, designed to fit the brake lines of the specified vehicle models. Note that mounting hardware is not included, so existing hardware should be reused or sourced separately.

Compatible Vehicles and Applications

This brake master cylinder is compatible with several classic GM models, including Buick Cutlass, Oldsmobile Cutlass, Pontiac GTO, LeMans, Skylark, and Tempest. It is an appropriate replacement part for owners seeking to maintain or restore the brake hydraulics on these vehicles. Using part number M49212 ensures a proper fit and function within the brake system of these specific makes and models.

Common Issues Addressed by This Master Cylinder

• Brake pedal sinking or sponginess due to internal leaks
• Brake fluid leaks from a worn or damaged master cylinder
• Reduced braking efficiency caused by improper hydraulic pressure
• Brake warning light activation related to master cylinder failure
• Contaminated or deteriorated brake fluid reservoir

Installation Notes and Tips

When installing the Dorman M49212 master cylinder, ensure the brake system is properly bled to remove air and restore hydraulic pressure. Since mounting hardware is not included, retain the original bolts or acquire compatible replacements. Verify the rearward outlet size of 7/16-24 matches the brake line fittings on your vehicle. It is recommended to inspect all brake components during installation to maintain overall system integrity.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM standards for fit and function. The cast iron construction and integrated reservoir contribute to its durability and reliability. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulics products. Consult product documentation or the supplier for exact warranty terms.