Dorman CM640137 Clutch Master Cylinder

Reliable Clutch Master Cylinder for Volkswagen Corrado and Passat

The Dorman CM640137 clutch master cylinder is designed to restore proper clutch function in Volkswagen Corrado and Passat models. Engineered as a standard replacement part, it ensures consistent hydraulic pressure for smooth clutch operation.

Key Features of Dorman CM640137 Clutch Master Cylinder

• Bore diameter of 19 mm for precise hydraulic control
• Standard replacement grade for dependable performance
• Outlet thread size M12 x 1.0 for secure hydraulic line connection
• Port thread diameter M12 compatible with OEM specifications
• Includes clutch master cylinder component only

Detailed Product Description

This clutch master cylinder from Dorman, part number CM640137, is engineered to meet the exact specifications required for Volkswagen Corrado and Passat manual transmission systems. The 19 mm bore diameter provides the necessary hydraulic pressure to engage and disengage the clutch smoothly. The M12 x 1.0 outlet thread size and M12 port thread diameter ensure compatibility with the vehicle’s hydraulic lines, maintaining a secure and leak-free connection. As a standard replacement, this component is designed to restore the clutch system’s original performance without modification.

Common Issues Addressed by This Clutch Master Cylinder

• Difficulty shifting gears due to low or inconsistent hydraulic pressure
• Clutch pedal feels spongy or sinks to the floor
• Hydraulic fluid leaks from the master cylinder
• Delayed clutch engagement or disengagement
• Loss of clutch pedal resistance affecting drivability

Installation Notes and Tips

When installing the Dorman CM640137 clutch master cylinder, ensure the hydraulic system is properly bled to remove air pockets for optimal clutch performance. Verify that the M12 outlet and port threads align correctly with the vehicle’s hydraulic lines to prevent leaks. It is recommended to inspect related components such as the clutch slave cylinder and hydraulic lines during replacement to maintain system integrity.

Quality Assurance and Warranty

Dorman manufactures the CM640137 clutch master cylinder to meet or exceed OEM standards for fit, form, and function. This part undergoes rigorous quality control to ensure durability and reliable operation in Volkswagen Corrado and Passat vehicles. Warranty coverage details can be obtained from the product documentation or authorized sources.