Revmax Allison Transmission Cooler Thermostatic Bypass Upgrade For 17-20 L5P Duramax body and 30% more light output

and 30% more light output than the stock fog

500 RPM at 14

This tuner is one of the most advanced tuners on the market with WiFi update capability and ultra-fast processing speeds

5 Inch - 3

Revmax Allison Transmission Cooler Thermostatic Bypass Upgrade For 17-20 L5P Duramax body and 30% more light outputAllison 1000 L5P Transmission Cooler Thermostatic Bypass Upgrade All 2017+ L5P Duramax equipped GM Chevy trucks have always been known to run hotter than then their early predecessors. There also have been numerous melted down transmissions due to the bypass valve sticking in the cold closed position. Lastly, the thermal bypass has a large restriction in it which massively reduces cooler flow! The completely re engineered, Billet 6061 Aluminum RevMax