Mishimoto 2017+ GMC 6.6L Duramax L5P Transmission Thermal Bypass Valve Kit Front Winch Bumpers Please note that your factory

Please note that your factory gas cap is still required

Surface area is also increased by 69% over stock to make the most use of the air flowing through your Silverado's grill

Blue Anodized FinishIncludes:(1) Sinister Diesel Thermostat Housing

Rated at 1

you can be confident they are certified for use in competitive motorsports

Mishimoto 2017+ GMC 6.6L Duramax L5P Transmission Thermal Bypass Valve Kit Front Winch Bumpers Please note that your factoryThe 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 cooling system of the Allison 1000 transmission utilizes an in