Dorman M630434 Brake Master Cylinder

Reliable Brake Master Cylinder for Chevrolet Aveo and Pontiac Wave

The Dorman M630434 brake master cylinder is designed to restore proper brake hydraulics in Chevrolet Aveo and Pontiac Wave models. Engineered with durable aluminum and featuring a built-in reservoir, this master cylinder ensures consistent brake fluid delivery for safe stopping performance.

• Master cylinder bore diameter: 0.875 inches for precise hydraulic pressure
• Constructed from lightweight, corrosion-resistant aluminum
• Includes reservoir for brake fluid storage
• Four outlet ports with secondary outlet thread diameter of 10 mm
• Rearward outlet size: M10 x 1.0 with 1.0 thread pitch
• Package contains the master cylinder only; mounting hardware not included

Product Details and Specifications

The Dorman M630434 brake master cylinder is specifically engineered for use in Chevrolet Aveo and Pontiac Wave vehicles, providing a direct replacement for the original equipment part. Its 0.875-inch bore diameter allows for accurate hydraulic pressure generation, essential for effective brake system operation. The aluminum construction offers a balance of strength and corrosion resistance, extending the service life of the component. This master cylinder includes an integrated reservoir to hold brake fluid, simplifying installation and maintenance. With four outlets and a secondary outlet thread diameter of 10 mm, it supports the brake hydraulic system's fluid distribution requirements. The rearward outlet is sized M10 x 1.0 with a 1.0 thread pitch, matching factory specifications for seamless fitment.

Common Applications and Problem Resolution

• Restores brake pressure in Chevrolet Aveo and Pontiac Wave brake systems
• Replaces master cylinders with leaks or internal seal failures
• Addresses spongy or unresponsive brake pedal issues
• Solves brake fluid reservoir damage or contamination problems
• Corrects inconsistent brake fluid flow due to worn or damaged master cylinders

Installation Notes and Tips

Installation of the Dorman M630434 brake master cylinder requires careful attention to brake system bleeding procedures to remove air and ensure proper hydraulic function. Since mounting hardware is not included, retain original fasteners or source compatible replacements. Verify thread sizes and outlet fittings match vehicle specifications before installation. It is recommended to inspect brake lines and related components during replacement to maintain overall system integrity.

Quality Assurance and Warranty Information

Dorman manufactures the M630434 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and precise machining contribute to reliable performance under normal operating conditions. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. Consult product documentation or authorized sources for exact warranty terms.