Transmission Bypass Valves

All about Transmission Bypass Valves

Factory thermal bypass valves hold transmission fluid away from the cooler until it reaches temperature, and when one sticks the fluid never cools properly. Replacing it with a fixed billet bypass valve sends fluid straight to the cooler every time, which is exactly what you want on a truck that tows.

We carry bypass valves for the GM HD Duramax and Allison, the 6L80, 8L90, and 10L80 gas and 3.0L trucks, and Cummins powered Ram HD, Durango, Grand Cherokee, Charger, Challenger, and 300. Send us your VIN if you are unsure which valve your truck uses.