Dorman CM640158 Clutch Master Cylinder

Clutch Master Cylinder for Jeep Wrangler

Dorman CM640158 is a standard replacement clutch master cylinder for select 2007-2012 Jeep Wrangler models. It is precision-engineered to match the original equipment design, making it a direct replacement for a leaking or malfunctioning unit.

Key Features

• Standard replacement clutch master cylinder
• Direct replacement design for OE-style fit and function
• Built to match the original equipment layout for select Jeep Wrangler applications
• Package contents: clutch master cylinder
• Part number: CM640158

Product Details

This Dorman clutch master cylinder is made for 2007-2012 Jeep Wrangler manual transmission applications where the original hydraulic master cylinder has failed or is no longer holding pressure. The OE-matched design supports proper clutch pedal hydraulic operation and helps restore consistent clutch engagement and disengagement. CM640158 is also referenced by AMS Automotive M0121, Perfection 800091, and Sachs SH5501 for the same application.

Common Problems It Can Address

• Clutch fluid leaking from the master cylinder
• Soft or inconsistent clutch pedal feel
• Difficulty shifting gears due to hydraulic loss
• Clutch disengagement problems caused by master cylinder malfunction
• Reduced hydraulic pressure in the clutch system

Installation Notes and Tips

Verify vehicle year and manual transmission application before ordering. After installation, the clutch hydraulic system should be properly bled to remove air and restore pedal response. Inspect the related hydraulic components and fluid condition during service to confirm the repair.

Quality Assurance

Dorman engineers this replacement to match the original equipment design for the listed Jeep Wrangler years, helping provide a reliable service part for clutch hydraulic repair.