Dorman M390362 Brake Master Cylinder

Reliable Brake Master Cylinder for Buick, Oldsmobile, and Pontiac

The Dorman M390362 Brake Master Cylinder is engineered to restore proper brake hydraulics in select Buick, Oldsmobile, and Pontiac models. Designed with precision, this master cylinder ensures consistent brake fluid pressure for safe and effective braking performance.

• Master cylinder bore diameter: 1 inch for accurate fluid displacement
• Constructed from durable aluminum material for corrosion resistance
• Includes reservoir for brake fluid storage and monitoring
• Equipped with a sensor to support brake system diagnostics
• Two outlets with a secondary outlet thread diameter of 10 mm
• Rearward outlet size: M10 x 1.0 thread and unthreaded for versatile installation
• Package contains the master cylinder only; mounting hardware not included

Product Details and Specifications

This Dorman brake master cylinder (part number M390362) is designed specifically for compatibility with Buick Century, Oldsmobile Intrigue, Pontiac Grand Prix, and Regal models. The 1-inch bore diameter provides precise hydraulic pressure control, while the aluminum construction offers strength and resistance to corrosion over time. The included reservoir allows for proper brake fluid containment and easy inspection. Additionally, the integrated sensor supports vehicle brake system monitoring, enhancing safety and maintenance capabilities. The dual outlet design with a 10 mm secondary outlet thread diameter and rearward outlet options ensures compatibility with the original brake lines and fittings.

Common Applications and Problem Resolution

• Restores brake fluid pressure in vehicles experiencing spongy or unresponsive brakes
• Replaces master cylinders with leaking or damaged reservoirs
• Addresses brake warning light issues related to sensor failure
• Solves inconsistent brake pedal feel due to worn internal components
• Supports brake system repairs on Buick Century, Oldsmobile Intrigue, Pontiac Grand Prix, and Regal

Installation Notes and Tips

Installation of the Dorman M390362 master cylinder requires careful attention to brake line connections and proper bleeding of the brake system to remove air. Since mounting hardware is not included, retain or source original fasteners for secure installation. Verify sensor connections are properly engaged to maintain brake system diagnostics. It is recommended to inspect all brake components during installation to ensure overall system integrity.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications, using quality aluminum materials and precise machining. The part includes a sensor and reservoir to match original equipment functionality. While specific warranty details are not provided here, Dorman typically offers limited warranties covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.