Dorman CM39730 Clutch Master Cylinder

Overview of Dorman Clutch Master Cylinder CM39730

The Dorman CM39730 clutch master cylinder is designed as a standard replacement part for manual transmission systems. Engineered with a 0.688-inch bore diameter and M12 x 1.0 outlet thread size, this component ensures reliable hydraulic pressure for smooth clutch operation in select Chevrolet, GMC, and Oldsmobile vehicles.

• Bore diameter: 0.688 inches for precise hydraulic control
• Outlet thread size: M12 x 1.0 for secure fluid connection
• Port thread diameter: M12 compatible with OEM fittings
• Standard replacement grade for dependable performance
• Includes clutch master cylinder in package contents

Technical Details and Compatibility

The Dorman CM39730 clutch master cylinder is engineered to meet OEM specifications for manual transmission hydraulic systems. Its 0.688-inch bore diameter provides consistent fluid displacement, essential for proper clutch engagement and disengagement. The M12 x 1.0 outlet thread size and M12 port thread diameter ensure compatibility with factory hydraulic lines, minimizing installation complications. This clutch master cylinder is compatible with Chevrolet Bravada, S10, S10 Blazer, S15, S15 Jimmy, and Sonoma models, as well as GMC and Oldsmobile vehicles sharing these platforms.

Applications and Problem Resolution

• Restores hydraulic pressure in manual clutch systems
• Eliminates clutch pedal sponginess or failure to engage
• Resolves fluid leaks from worn or damaged master cylinders
• Addresses inconsistent clutch pedal travel or stiffness
• Prevents clutch disengagement issues caused by master cylinder wear

Installation Notes and Tips

When installing the Dorman CM39730 clutch master cylinder, ensure the hydraulic system is properly bled to remove air pockets for optimal clutch performance. Verify thread compatibility with existing hydraulic lines using the M12 x 1.0 outlet and M12 port threads. It is recommended to inspect related components such as the clutch slave cylinder and hydraulic lines during replacement to maintain system integrity. Follow vehicle-specific service manual instructions for torque specifications and safety precautions.

Quality Assurance and Warranty

Dorman manufactures the CM39730 clutch master cylinder to meet standard replacement quality levels, providing reliable function and durability. This part undergoes quality control testing to ensure fitment and performance standards are met. Warranty coverage details are available through Dorman and typically include protection against defects in materials and workmanship for a specified period.