Dorman M630656 Brake Master Cylinder

Reliable Brake Master Cylinder for Chevrolet Cobalt and Pontiac G5

The Dorman M630656 brake master cylinder is designed specifically for Chevrolet Cobalt and Pontiac G5 models, providing precise hydraulic control for your vehicle's braking system. This master cylinder includes a reservoir and sensor to ensure optimal brake performance and safety.

Key Features of the Dorman M630656 Brake Master Cylinder

• Master cylinder bore diameter: 0.875 inches for accurate hydraulic pressure
• Constructed from durable aluminum material for corrosion resistance
• Includes reservoir and sensor for complete brake system integration
• Two outlet ports with rearward outlet size M10 x 1.0 and secondary outlet thread diameter M12 x 1.0
• Thread pitch of 1.0 for secure fitting
• Package contains the master cylinder only; mounting hardware not included

Detailed Description of the Dorman M630656 Brake Master Cylinder

This brake master cylinder is engineered to meet the specifications of Chevrolet Cobalt and Pontiac G5 vehicles, ensuring compatibility and reliable operation. The aluminum construction offers strength and resistance to wear, while the included reservoir and sensor support proper fluid management and brake system monitoring. With two precisely threaded outlets, this master cylinder facilitates secure connections to the brake hydraulics, maintaining consistent pressure and brake responsiveness.

Common Applications and Issues Addressed

• Replacement for worn or leaking master cylinders in Chevrolet Cobalt and Pontiac G5
• Restores proper brake fluid pressure and pedal feel
• Resolves brake warning light issues related to sensor failure
• Prevents brake fluid leaks from damaged or corroded master cylinders
• Improves overall brake system reliability and safety

Installation Notes and Tips

• Ensure compatibility with Chevrolet Cobalt and Pontiac G5 models before installation
• Bleed the brake system thoroughly after installation to remove air
• Use appropriate brake fluid as specified by the vehicle manufacturer
• Check all connections for leaks and proper thread engagement (M10 x 1.0 and M12 x 1.0 outlets)
• Mounting hardware is not included; reuse existing hardware or source separately

Quality Assurance and Warranty Information

Dorman manufactures the M630656 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated sensor contribute to long-term durability and reliable brake system performance. Warranty coverage details should be confirmed with the product documentation or supplier.