Mishimoto 2017+ GMC 6.6L Duramax L5P Transmission Thermal Bypass Valve Kit Engine Components>Gasket Kits S550 and S650 Mustang

S550 and S650 Mustang

allowing you to fine-tune your setup for maximum grip and stability

Designed with tapered ends for enhanced tire travel and extreme approach & departure angles

Installation time is about 2 hours

Mishimoto 2017+ GMC 6.6L Duramax L5P Transmission Thermal Bypass Valve Kit Engine Components>Gasket Kits S550 and S650 MustangThe 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