Restore proper hydraulic control and renew clutch apply fluid pressure performance in GM 8L45, 8L90 transmissions by replacing worn OE parts with Sonnax drop-in S4 clutch control valve kit #154740-24K. Sonnax valve in this kit cannot be used in the early S4 location, as early-design valve bodies have a different design S4 valve.
For more information, go to: www.sonnax.com
