A worn secondary pressure regulator plunger valve sleeve in AS66RC transmissions can cause reduced SLT pressure, TCC codes and shudder and overheating. The plunger valve is reacted on by SLT pressure, which allows throttle control of the converter charge circuit. As the OE sleeve wears, SLT pressure exhausts, compromising the converter charge circuit and resulting in the noted symptoms. Sonnax secondary pressure regulator plunger valve kit 122740-03K restores the hydraulic control and fixes these issues.

Hardcoat anodized aluminum plunger valve combats premature wear
Upgraded sleeve material is highly wear-resistant to increase life
Drop-in Zip Valve™ parts install quickly and easily

Learn More About Zip Valve™ Drop-In Repairs

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