Dorman CM640038 Clutch Master Cylinder

Reliable Clutch Master Cylinder for Subaru Manual Transmissions

The Dorman CM640038 clutch master cylinder is designed as a standard replacement part for select Subaru models. Engineered with a 0.625-inch bore diameter, this component ensures consistent hydraulic pressure for smooth clutch operation in vehicles like the Subaru Baja, Forester, Impreza, Legacy, and Outback.

• Standard replacement grade for dependable performance
• Precisely sized 0.625-inch bore diameter for optimal hydraulic function
• Includes clutch master cylinder unit ready for installation
• Compatible with multiple Subaru models including Baja, Forester, Impreza, Legacy, and Outback
• Manufactured by Dorman, a trusted name in automotive replacement parts

Product Details and Specifications

The Dorman CM640038 clutch master cylinder is built to meet OEM specifications for manual transmission systems in Subaru vehicles. Its 0.625-inch bore diameter is critical for maintaining proper hydraulic pressure, which directly affects clutch engagement and disengagement. This standard replacement part is designed to restore clutch system functionality and improve pedal feel without requiring modifications. The package contains the clutch master cylinder itself, making it a straightforward swap for worn or leaking units.

Compatible Subaru Models and Applications

This clutch master cylinder is compatible with the following Subaru models equipped with manual transmissions:

• Subaru Baja
• Subaru Forester
• Subaru Impreza
• Subaru Legacy
• Subaru Outback

Using the Dorman CM640038 ensures proper fit and function for these vehicles, helping maintain reliable clutch performance.

Common Issues Addressed by This Clutch Master Cylinder

• Clutch pedal feels spongy or soft
• Difficulty shifting gears smoothly
• Hydraulic fluid leaks from the master cylinder
• Clutch engagement is inconsistent or delayed
• Reduced clutch pedal travel or responsiveness

Installation Notes and Tips

When installing the Dorman CM640038 clutch master cylinder, ensure the hydraulic system is properly bled to remove air and restore correct pedal feel. Verify the bore diameter matches the original component to maintain system integrity. It is recommended to inspect related clutch hydraulic components such as the slave cylinder and lines during replacement. Proper installation will help avoid premature wear and ensure consistent clutch operation.

Quality Assurance and Warranty Information

Dorman manufactures the CM640038 clutch master cylinder to meet industry standards for durability and performance. This part is offered as a standard replacement grade component, providing reliable function for Subaru manual transmission systems. Warranty coverage details can be obtained from the product documentation or supplier, ensuring confidence in the part’s quality and longevity.