Dorman CM640037 Clutch Master Cylinder

Reliable Clutch Master Cylinder for Chevrolet and GMC Trucks

The Dorman CM640037 clutch master cylinder is designed as a standard replacement part for manual transmission systems. Engineered with an 18mm bore diameter, this component ensures consistent hydraulic pressure for smooth clutch operation in select Chevrolet and GMC heavy-duty trucks.

• Standard replacement grade for dependable performance
• 18mm bore diameter optimized for hydraulic clutch systems
• Compatible with Chevrolet Silverado 2500 HD and 3500 models
• Fits GMC Sierra 2500 HD and 3500 trucks
• Includes clutch master cylinder unit in package

Product Details and Specifications

The Dorman CM640037 clutch master cylinder is manufactured to meet OEM specifications for manual transmission components. Its 18mm bore diameter is critical for maintaining proper hydraulic pressure, ensuring smooth clutch engagement and disengagement. This part is a direct replacement designed to restore clutch system functionality in Chevrolet Silverado 2500 HD, Silverado 3500, GMC Sierra 2500 HD, and Sierra 3500 models. The standard replacement grade indicates it meets quality and durability standards suitable for everyday driving conditions.

Compatible Vehicles and Applications

This clutch master cylinder is compatible with the following vehicles:

• Chevrolet Silverado 2500 HD
• Chevrolet Silverado 3500
• GMC Sierra 2500 HD
• GMC Sierra 3500

It is specifically designed for manual transmission systems in these heavy-duty trucks, ensuring proper fit and function.

Common Issues Addressed by This Clutch Master Cylinder

• Difficulty shifting gears due to hydraulic pressure loss
• Clutch pedal feels spongy or soft
• Fluid leaks from the clutch master cylinder
• Clutch not fully disengaging during operation
• Reduced clutch system responsiveness

Installation Notes and Tips

When installing the Dorman CM640037 clutch master cylinder, ensure the hydraulic system is properly bled to remove air pockets. Verify the bore diameter matches the original component to maintain system integrity. Use appropriate tools to avoid damage to the cylinder or surrounding components. It is recommended to inspect related clutch hydraulic parts during installation for wear or leaks.

Quality Assurance and Warranty

Dorman manufactures the CM640037 clutch master cylinder to meet industry standards for manual transmission components. This part is backed by Dorman's quality assurance processes to ensure reliable performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.