Dorman M630330 Brake Master Cylinder

Reliable Brake Master Cylinder for Pontiac Vibe

The Dorman M630330 brake master cylinder is designed specifically for Pontiac Vibe models, providing precise hydraulic control for your vehicle's braking system. This master cylinder features a durable aluminum construction and includes a reservoir and sensor to ensure optimal performance.

• Master cylinder bore diameter: 20.68 mm for accurate hydraulic pressure
• Constructed from lightweight, corrosion-resistant aluminum
• Includes reservoir for fluid storage and sensor for system monitoring
• Two outlets with rearward outlet size M10 x 1.0 and thread pitch 1.0
• Secondary outlet thread diameter of 10 mm for secure connections

Product Details and Specifications

The Dorman M630330 brake master cylinder is engineered to meet the hydraulic demands of the Pontiac Vibe braking system. Its aluminum body offers strength and resistance to corrosion, extending the life of the component. The included reservoir allows for proper brake fluid containment, while the integrated sensor supports brake system diagnostics. Featuring two outlets, this master cylinder ensures efficient fluid distribution with a bore diameter of 20.68 mm, optimizing brake pedal feel and response. The rearward outlet size of M10 x 1.0 and a thread pitch of 1.0 provide compatibility with factory brake lines, ensuring a secure fit without the need for additional mounting hardware.

Compatible Applications and Common Issues Addressed

• Replacement for worn or leaking master cylinders on Pontiac Vibe models
• Resolves brake pedal sinking or sponginess due to internal seal failure
• Addresses brake fluid leaks from the master cylinder reservoir or outlets
• Restores proper brake pressure and pedal feel for safe stopping
• Supports brake system sensor functionality for warning light accuracy

Installation Notes and Tips

When installing the Dorman M630330 brake master cylinder, ensure the brake fluid reservoir is properly filled and free of contaminants. Bleed the brake system thoroughly to remove air and verify sensor connections are secure for accurate system monitoring. This part does not include mounting hardware, so retain original fasteners or source compatible replacements. Follow vehicle-specific service manual instructions for torque specifications and safety precautions.

Quality Assurance and Warranty Information

Dorman manufactures the M630330 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated sensor contribute to reliable brake system performance. This part is backed by Dorman's quality assurance processes, providing confidence in durability and compatibility with Pontiac Vibe vehicles. Warranty details are available through Dorman and should be reviewed prior to installation.