The OE thermal bypass valve in listed transmissions is known to get stuck in recirculation mode, only allowing fluid to circulate in the transmission and not allowing flow through the cooler. Sonnax thermal bypass eliminator kit 72760-01K allows reuse of the OE cooler block with the built-in pressure relief by removing the old OE thermal bypass valve and replacing it with a plug that permanently allows flow through the cooler.

• Drop-in Zip Valve™ parts install quickly and easily into OE cooler bypass valve
• Less expensive than replacing the OE cooler bypass valve