Dorman CM39903 Clutch Master Cylinder

Reliable Clutch Master Cylinder for Acura and Honda Vehicles

The Dorman CM39903 clutch master cylinder is designed as a standard replacement part for manual transmission systems. Engineered with a 0.625-inch bore diameter, this component ensures consistent hydraulic pressure for smooth clutch operation in select Acura and Honda models.

• Standard replacement grade for dependable performance
• 0.625-inch bore diameter optimized for precise hydraulic control
• Compatible with Acura and Honda manual transmission vehicles
• Includes clutch master cylinder in package contents
• Part number CM39903 for accurate identification and fitment

Product Details and Specifications

This clutch master cylinder from Dorman is built to meet OEM specifications for manual transmission systems in Acura and Honda vehicles, including the Civic, Civic del Sol, and Integra models. The 0.625-inch bore diameter is critical for maintaining proper hydraulic pressure, which directly affects clutch engagement and disengagement. As a standard replacement part, it provides a reliable solution for restoring clutch system functionality without requiring modifications.

Compatible Vehicles and Applications

Compatible with the following makes and models:

• Acura Integra
• Honda Civic
• Honda Civic del Sol

This clutch master cylinder is intended for manual transmission systems in these vehicles, ensuring proper fit and function.

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
• Loss of hydraulic pressure in the clutch system

Installation Notes and Tips

When installing the Dorman CM39903 clutch master cylinder, ensure the hydraulic system is properly bled to remove air pockets. Verify the bore diameter matches the vehicle’s specifications to maintain correct hydraulic pressure. Use appropriate tools to avoid damage to the cylinder or surrounding components. It is recommended to inspect related clutch components during installation for overall system integrity.

Quality Assurance and Warranty

Dorman manufactures this clutch master cylinder to meet industry standards for durability and performance. The part is backed by a limited warranty, providing coverage against defects in materials and workmanship. Refer to Dorman’s warranty policy for specific terms and conditions.