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Dorman CM39644 Clutch Master Cylinder
Reliable Clutch Master Cylinder for Jeep Wrangler
The Dorman CM39644 clutch master cylinder is designed as a standard replacement part for Jeep Wrangler manual transmission systems. Featuring a precise 0.688-inch bore diameter, this component ensures consistent hydraulic pressure for smooth clutch operation.
- Standard replacement grade for dependable performance
- Exact 0.688-inch bore diameter for proper fit and function
- Includes clutch master cylinder unit only
- Compatible with Jeep Wrangler manual transmission models
- Part number CM39644 for accurate identification
Product Details and Specifications
This clutch master cylinder by Dorman is engineered to meet OEM specifications for Jeep Wrangler vehicles equipped with manual transmissions. The 0.688-inch bore diameter is critical for maintaining the correct hydraulic pressure needed to engage and disengage the clutch smoothly. As a standard replacement part, it provides reliable operation without requiring modifications or additional components. The package contains the clutch master cylinder itself, ready for installation.
Compatible Applications and Common Issues Addressed
This clutch master cylinder is compatible with Jeep Wrangler models requiring a 0.688-inch bore diameter component. It is designed to address several common clutch system problems, including:
- Spongy or soft clutch pedal feel
- Difficulty shifting gears due to hydraulic failure
- Clutch pedal sticking or not returning properly
- Fluid leaks from the master cylinder
- Loss of hydraulic pressure in the clutch system
Installation Notes and Tips
When installing the Dorman CM39644 clutch master cylinder, ensure the hydraulic system is properly bled to remove air and restore full clutch pedal responsiveness. Verify the bore diameter matches the vehicle’s specifications to avoid fitment issues. It is recommended to inspect related components such as the clutch slave cylinder and hydraulic lines during installation for overall system integrity.
Quality Assurance and Warranty Information
Dorman manufactures this clutch master cylinder to meet industry standards for durability and performance. The part is backed by a limited warranty covering defects in materials and workmanship, providing confidence in its reliability for Jeep Wrangler manual transmission repairs.
| Brand | Dorman |
| Part Number | CM39644 |
| Bore Diameter | 0.688 |
| Item Grade | Standard Replacement |
| Package Contents | Clutch Master Cylinder |
This part fits 4 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1990 | Jeep | Wrangler | N/A | Fits drum brakes with 11/16" bore size. |
| 1989 | Jeep | Wrangler | N/A | Fits drum brakes with 11/16" bore size. |
| 1988 | Jeep | Wrangler | N/A | Fits drum brakes with 11/16" bore size. |
| 1987 | Jeep | Wrangler | N/A | Fits drum brakes with 11/16" bore size. |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.