Dorman CM640197 Clutch Master Cylinder

Clutch Master Cylinder for Toyota Yaris and Scion xD

This Dorman clutch master cylinder is a direct replacement for specific Toyota Yaris and Scion xD applications. It is precision-engineered to match the original equipment design for reliable clutch hydraulic performance, and it addresses leaking or malfunctioning master cylinders with a standard replacement solution.

Key Features

• Direct replacement clutch master cylinder for manual transmission systems
• Fits 2007-2010 Toyota Yaris and 2008-2014 Scion xD
• Plastic construction with metallic color/finish
• 0.625 bore diameter for OE-style hydraulic operation
• M10 x 1.0 outlet thread size and 10 mm port thread diameter
• Standard replacement grade from Dorman, part number CM640197

Detailed Product Overview

Built for specific Toyota Yaris and Scion xD fitments, this clutch master cylinder is designed to restore hydraulic pressure at the clutch pedal and transmission interface. The OE-style design helps maintain proper pedal feel and fluid transfer, while the direct replacement format supports a straightforward match to the original component layout. If you are searching for a Dorman CM640197 clutch master cylinder for a 2007-2010 Toyota Yaris or 2008-2014 Scion xD, this part provides the correct application-specific fitment.

This part cross-references 3142052070 and CMT-150 for the same application.

Common Problems This Part Can Address

• Clutch fluid leaking from the master cylinder
• Soft, inconsistent, or failing clutch pedal hydraulic response
• Difficulty disengaging the clutch during shifting
• Loss of hydraulic pressure in the clutch system
• Wear-related malfunction in the original master cylinder

Installation Notes and Tips

Verify the vehicle year and model before installation to confirm fitment for your Toyota Yaris or Scion xD. Match the outlet thread size and port thread diameter to the existing hydraulic line connection, and inspect the clutch hydraulic system for leaks or contamination before installing the replacement unit. After installation, bleed the clutch system according to the vehicle service procedure to restore proper pedal operation.

Quality Assurance

Dorman manufactures this clutch master cylinder as a standard replacement part engineered to match the original equipment design for the listed applications. Part number CM640197 is built for direct-fit replacement use in the specified Toyota Yaris and Scion xD model years.