Flare upshifts or downshift bind-ups in vehicles with the Aisin AWTR-60SN and VW/Audi 09D transmissions can be caused by a worn K3 clutch control valve. Wear at this valve causes incorrect shift timing, which can also cause clutch distress. The Sonnax K3 clutch control valve kit 25741-08K helps restore shift timing.
Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.
Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.