Dorman CM640187 Clutch Master Cylinder

Reliable Clutch Master Cylinder for Subaru Impreza

The Dorman CM640187 clutch master cylinder is a standard replacement part designed specifically for Subaru Impreza models. Engineered to meet OEM specifications, this component ensures consistent clutch performance and smooth manual transmission operation.

• Standard replacement grade for dependable function
• Outlet thread size: M10 x 1.0 for precise fitment
• Port thread diameter: 10 mm for secure hydraulic connections
• Includes one clutch master cylinder per package
• Compatible with Subaru Impreza manual transmission systems

Product Details and Specifications

The Dorman CM640187 clutch master cylinder is manufactured to provide a direct fit replacement for the manual transmission system in Subaru Impreza vehicles. Its outlet thread size of M10 x 1.0 and port thread diameter of 10 mm ensure proper hydraulic line connections, maintaining the integrity of the clutch hydraulic system. This part is designed as a standard replacement, offering reliable performance without modification. The package contains a single clutch master cylinder, ready for installation.

Applications and Common Issues Addressed

• Restores clutch hydraulic pressure for smooth gear shifting
• Eliminates clutch pedal sponginess or sinking issues
• Resolves fluid leaks from the master cylinder
• Prevents clutch disengagement problems caused by worn components
• Addresses inconsistent clutch pedal feel in Subaru Impreza manual transmissions

Installation Notes and Tips

When installing the Dorman CM640187 clutch master cylinder, ensure the hydraulic lines are properly connected to the M10 x 1.0 outlet threads and the 10 mm port threads. Bleed the clutch hydraulic system thoroughly to remove air and restore proper pedal feel. Verify compatibility with your specific Subaru Impreza model year before installation. Use appropriate tools to avoid damaging the threads during installation.

Quality Assurance and Warranty

Dorman manufactures the CM640187 clutch master cylinder to meet industry standards for durability and performance. This part undergoes quality control inspections to ensure reliable operation in Subaru Impreza vehicles. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship.