Dorman M630487 Brake Master Cylinder

Reliable Brake Master Cylinder for Chevrolet HHR

The Dorman M630487 brake master cylinder is designed specifically for Chevrolet HHR models, providing precise hydraulic control for your vehicle's braking system. This master cylinder features an aluminum construction and includes a reservoir and sensor to ensure consistent performance.

• Master cylinder bore diameter: 0.938 inches
• Durable aluminum material for long-lasting use
• Includes reservoir and sensor for integrated functionality
• 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 connections

Product Details and Specifications

The Dorman M630487 brake master cylinder is engineered with a 0.938-inch bore diameter to match the hydraulic requirements of the Chevrolet HHR. Constructed from aluminum, this master cylinder offers corrosion resistance and strength to withstand daily driving conditions. It comes complete with a reservoir and sensor, allowing for seamless integration with the vehicle’s brake fluid monitoring system. The unit features two outlets: a rearward outlet sized M10 x 1.0 and a secondary outlet with an M12 x 1.0 thread diameter, both with a 1.0 thread pitch to ensure proper fitment and leak-free connections.

Common Applications and Problem Resolution

• Restores proper brake fluid pressure and pedal feel
• Replaces leaking or damaged master cylinders in Chevrolet HHR
• Addresses brake warning light issues related to sensor failure
• Eliminates spongy or unresponsive brake pedal symptoms
• Prevents brake fluid contamination with integrated reservoir

Installation Notes and Tips

When installing the Dorman M630487 brake master cylinder on a Chevrolet HHR, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. Verify that the sensor connections are secure and compatible with the vehicle’s wiring harness. Use appropriate tools to avoid damaging the aluminum housing or thread fittings. This master cylinder does not include mounting hardware, so retain original components or source compatible fasteners as needed.

Quality Assurance and Warranty Information

Dorman manufactures the M630487 brake master cylinder to meet or exceed OEM specifications for the Chevrolet HHR. The aluminum construction and integrated sensor contribute to reliable brake system performance. While specific warranty details are not provided here, Dorman products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.