2017-2019 Silverado & Sierra 2500 & 3500 Duramax L5P Transmission Coolers

Your Duramax L5P tends to running pretty hot, and the temperatures only go up when you start adding some serious power or towing heavy trailers, which your transmission is usually not happy with. Tier One's transmission coolers for 2017-2019 Silverado & Sierra 2500 & 3500 Duramax L5P trucks help keep your HD truck's transmission temperatures under control, even when under massive loads, so that you don't end up stuck on the side of the road in limp mode or permanently hurting your transmission. Each of these transmission coolers feature larger surface areas and more efficient designs than stock so that they dissipate heat much more effectively to keep you on the road. We here at Tier One carry both drop-in replacement Duramax L5P transmission coolers as well as universal auxiliary transmission coolers to give your truck some extra cooling kick. Make sure you also check out our 2017-2019 Duramax L5P Transmission Pans or our 2017-2019 Duramax L5P Bypass Valves!