Sonnax Boost Valve Kit 6L45 6L50 6L80 6L90

Sonnax Boost Valve Kit for 6L45, 6L50, 6L80, 6L90 Transmissions Upgrade your transmission's performance with the Sonnax Boost Valve Kit, designed for 6L45, 6L50, 6L80, and 6L90 models. This kit includes high-quality components to address common transmission issues and ensure smooth and reliable operation. Symptoms: Low line rise in Drive Soft shifts Burnt clutches Cause: Wear of the boost valve sleeve allows EPC fluid pressure to escape to exhaust. Correction: The Sonnax drop-in boost valve kit features upgraded materials and minimal clearances to prevent wear and restore proper hydraulic control. The sleeve has a slightly larger EPC feed orifice for quicker throttle response. A new pressure regulator valve outer spring is also included to replace weakened original springs, providing a modest 5 psi increase across the pressure curve. Features: Boost sleeve is manufactured from highly wear-resistant billet aluminum to prevent wear Larger feed orifice provides quicker throttle respons