Dorman M630531 Brake Master Cylinder

Reliable Brake Master Cylinder for Chevrolet Express 1500 and GMC Savana 1500

The Dorman M630531 Brake Master Cylinder is engineered to restore proper brake hydraulics for Chevrolet Express 1500 and GMC Savana 1500 models. Designed with precision, this master cylinder includes a reservoir and sensor to ensure consistent brake performance.

Key Features of the Dorman M630531 Brake Master Cylinder

• Master cylinder bore diameter: 34 mm for accurate hydraulic pressure
• Constructed from durable aluminum material for corrosion resistance
• Includes reservoir for fluid storage and management
• Equipped with a sensor to monitor brake system status
• Two outlet ports with rearward outlet size M14 x 1.5 and thread pitch 1.5
• Secondary outlet thread diameter of 14 mm
• Package contains the master cylinder unit only

Detailed Product Description

The Dorman M630531 brake master cylinder is designed specifically for the Chevrolet Express 1500 and GMC Savana 1500, providing a precise fit and reliable brake hydraulics. Its 34 mm bore diameter ensures proper fluid displacement for effective braking response. Made from aluminum, this master cylinder offers enhanced durability and resistance to corrosion, extending the service life of your brake system. The included reservoir allows for efficient brake fluid storage, while the integrated sensor provides real-time monitoring of brake system conditions. Featuring two outlets with a rearward outlet size of M14 x 1.5 and a thread pitch of 1.5, this master cylinder supports proper brake line connections for optimal hydraulic flow.

Common Brake Issues Addressed by This Master Cylinder

• Brake pedal sinking or sponginess due to internal leaks
• Loss of hydraulic pressure affecting braking performance
• Brake fluid contamination or reservoir damage
• Faulty brake system sensor readings
• Incompatible or worn master cylinder causing uneven braking

Installation Notes and Tips

Ensure the brake system is fully depressurized before removing the old master cylinder. Properly bleed the brake lines after installation to remove air and restore hydraulic pressure. Verify sensor connections are secure to maintain accurate brake system monitoring. Use compatible brake fluid as specified by the vehicle manufacturer. This master cylinder does not include mounting hardware, so retain original components or source separately if needed.

Quality Assurance and Warranty

Dorman manufactures the M630531 brake master cylinder to meet or exceed OEM specifications for Chevrolet Express 1500 and GMC Savana 1500 vehicles. The aluminum construction and integrated sensor contribute to reliable brake system operation. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in materials and workmanship.