Looking for aftermarket parts to modify or upgrade your 2018 GMC Sierra 2500 HD with transmission coolers? At Tunersports.com we carry a huge selection of the top name brand performance transmission cooler parts and accessories for your Sierra 2500 HD.
Whether you have a 2018 GMC Sierra 2500 HD in Base to SLT trim we have you covered. We have 2 transmission coolers available to mod your Sierra 2500 HD. All parts have free shipping to the Continental US 48 States.
 OUT OF STOCK MMTC-L5P-TBVThe 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... Mishimoto 2017+ GMC 6.6L Duramax L5P Transmission Thermal Bypass Valve Kit 2017-2021 GMC Sierra 2500 HD Base / Denali / SLE / SLT $148.77 |
 IN STOCK - LOW MMTC-L5P-TBVFFThe 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... Mishimoto 2017+ GMC 6.6L Duramax L5P Transmission Thermal Bypass Valve Kit 2017-2021 GMC Sierra 2500 HD Base / Denali / SLE / SLT $126.00 |