Dorman CM640040 Clutch Master Cylinder

Clutch Master Cylinder for Subaru Manual Transmissions

The Dorman CM640040 clutch master cylinder is a direct replacement for specific Subaru manual transmission applications. It is precision-engineered to match original equipment design for reliable clutch hydraulic performance in 1998-1999 Subaru Legacy, 1998 Subaru Forester, and 1998 Subaru Impreza models.

Key Features

• Direct replacement clutch master cylinder for OE-style fit and function
• 0.625 bore diameter for the specified Subaru applications
• Standard replacement grade for everyday repair use
• Package contents: clutch master cylinder
• Cross-reference part numbers include AMS Automotive M1501 and Beck/Arnley 072-9777

Detailed Description

Built for manual transmission clutch hydraulic systems, this Dorman CM640040 clutch master cylinder is made to match the original equipment design used on select Subaru vehicles. It supports consistent clutch pedal hydraulic action and is a practical replacement when the original cylinder shows internal wear or external leakage. Compatible With 1998-1999 Subaru Legacy, 1998 Subaru Forester, and 1998 Subaru Impreza, this part is a fit-focused solution for Subaru Legacy clutch master cylinder replacement and Subaru Impreza clutch hydraulic repair. The CM640040 part number is also a useful reference when comparing aftermarket listings for the same application.

What It Helps Fix

• Clutch fluid leakage at 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 replacement of the original clutch master cylinder

Installation Notes and Tips

Verify vehicle year, make, model, and manual transmission application before ordering. Inspect the clutch hydraulic line, reservoir feed, and related components for wear or contamination during replacement. After installation, bleed the clutch hydraulic system thoroughly to remove air and restore proper pedal feel. Confirm the bore diameter and OE-style mounting points match the original unit before installation.

Quality Assurance

Dorman designs this standard replacement clutch master cylinder to follow the original equipment layout for the listed Subaru applications. The CM640040 is intended as a direct-fit replacement for specific vehicle years and models.