Dorman M630507 Brake Master Cylinder

Reliable Brake Master Cylinder for Cadillac, Chevrolet, and GMC

The Dorman M630507 Brake Master Cylinder is engineered to restore proper brake hydraulics in select Cadillac, Chevrolet, and GMC vehicles. Designed with precision, this master cylinder ensures consistent brake fluid pressure for safe and effective braking performance.

• Compatible with Cadillac Escalade, Chevrolet Silverado 1500, Sierra 1500, Tahoe, and GMC Yukon
• Dual bore diameters: 0.656 inch and 0.813 inch for balanced braking
• Constructed from durable aluminum for corrosion resistance and longevity
• Includes reservoir and sensor for integrated brake fluid management
• Features five outlets with a rearward outlet size of M12 x 1.5 and 1.5 thread pitch

Product Details and Specifications

The Dorman M630507 master cylinder is crafted from aluminum, providing a lightweight yet robust component that resists corrosion and wear. It features two master cylinder bore diameters, 0.656 inch and 0.813 inch, which help maintain proper hydraulic pressure distribution between the front and rear brakes. This part includes a reservoir and an integrated sensor to monitor brake fluid levels, enhancing system reliability. The master cylinder has five outlets, including a rearward outlet sized M12 x 1.5 with a 1.5 thread pitch, designed to fit the brake lines of compatible vehicles precisely.

Compatible Vehicles and Applications

This brake master cylinder is compatible with a range of full-size SUVs and trucks, including:

• Cadillac Escalade
• Chevrolet Silverado 1500
• Chevrolet Sierra 1500
• Chevrolet Tahoe
• GMC Yukon

It is ideal for restoring brake hydraulic function in these models, ensuring safe stopping power and consistent brake pedal feel.

Common 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 fluid level sensor triggering warning lights
• Uneven brake application caused by worn or damaged master cylinder bores

Installation Notes and Tips

Installation of the Dorman M630507 master cylinder requires proper brake system bleeding to remove air and ensure optimal hydraulic pressure. Since mounting hardware is not included, retain original fasteners or source compatible replacements. Verify thread sizes and outlet fittings match your vehicle’s brake lines before installation. It is recommended to inspect related brake components such as brake lines and calipers during replacement.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications, using quality materials like aluminum for durability. The part includes a sensor and reservoir to maintain system integrity. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulics products to cover defects in materials and workmanship.