Sonnax 104740-09K Compensator Feed Regulator Valve Kit for GM 6L45 6L50 6L80 6L90

The Sonnax 104740-09K Compensator Feed Regulator Valve Kit is designed to restore proper hydraulic pressure control in GM 6L45, 6L50, 6L80, 6L90, 6T30 (Gen. 1), and 6T40 (Gen. 1) transmissions. This valve body repair kit addresses a critical component that controls the compensator feed circuit, which assists clutch return springs during the release of rotating clutches.

These GM transmissions incorporate a low-pressure compensator feed circuit that maintains pressure in the clutch release cavity after disengagement to oppose centrifugal application of the clutches. When the valve bore wears over time, proper valve operation is compromised, leading to clutch apply timing issues that manifest as harsh shifting, shift flares, bump shifts, and downshift clunk. Without correction, this can result in overheated transmission fluid and burned clutches.

Key Features:

• Hardcoat anodized aluminum valve combats premature wear and extends service life
• Highly wear-resistant aluminum sleeve provides additional valve support
• Includes calibrated spring for restoring OE compensator pressure specifications
• Drop-in installation restores normal compensator action for improved shift quality in all ranges
• Addresses harsh shifts, flares, bind-up, and clutch damage caused by bore wear

This comprehensive valve kit provides a complete solution for rebuilders and transmission shops addressing compensator feed circuit problems. Installation restores factory-spec hydraulic control for revived shift characteristics and transmission longevity.