Mishimoto Transmission Thermal Bypass Valve Kit 17-19 GM 6.6L Duramax L5P AMP-75300-01A and much higher torque across

and much higher torque across the entire RPM range

This unit is made of billet aluminum and will add a great look to your engine

Mag-Hytec designed the cover with external cooling fins to get rid of heat fast

No tuning required

you can have confidence these will last you as long as your original pump

Mishimoto Transmission Thermal Bypass Valve Kit 17-19 GM 6.6L Duramax L5P AMP-75300-01A and much higher torque acrossAre you wanting the best performance out of your Transmission? The Allison transmission is the backbone of your L5P Duramax. It's responsible for transmitting large quantities of torque from your V8 diesel powerplant. This torque generates a lot of heat, and if that heat isn't dissipated, it can destroy your transmission. The transmission cooler does a good job of keeping trans fluid temperatures in check, but only if the fluid can reach it. The stock