Protect your transmission from heat buildup with the Mishimoto 17-19 GM 6.6L Duramax L5P Transmission Cooler. Designed specifically for 2017-2019 Chevrolet and GMC trucks equipped with the Allison transmission, this direct-fit cooler features a robust stacked-plate construction that ensures maximum durability and efficient cooling performance. Its larger core volume and increased fin surface area—67% and 164% respectively compared to the stock cooler—allow for superior heat dissipation, keeping your transmission operating at optimal temperatures even under demanding towing or hauling conditions. Whether you are a heavy-duty tow operator or a daily driver seeking enhanced transmission longevity, this cooler provides reliable thermal management to prevent overheating and extend your vehicle's service life. The included CNC-machined adapters facilitate seamless connection to stock transmission lines or AN fittings, while the custom brackets and hoses simplify installation. As part of Mishimoto’s commitment to quality, this product is backed by a lifetime warranty with accident protection, offering peace of mind for the long haul. Constructed with high-quality materials and engineered for a perfect fit, this transmission cooler is an essential upgrade for maintaining transmission health and ensuring consistent performance in tough driving environments.
Features:
- CNC-machined adapters enable easy connection to stock or AN lines for leak-free cooling
- Direct-fit design for all 2017-2019 Chevrolet Silverado 2500 HD and 3500 HD with L5P Duramax and Allison transmission
- Stacked-plate construction ensures maximum durability and superior heat dissipation
Fitment:
2017 Chevrolet Silverado 2500 HD High Country
2017 Chevrolet Silverado 2500 HD LT
2017 Chevrolet Silverado 2500 HD LTZ
2017 Chevrolet Silverado 2500 HD WT
2017 Chevrolet Silverado 3500 HD High Country
2017 Chevrolet Silverado 3500 HD LT
2017 Chevrolet Silverado 3500 HD LTZ
2017 Chevrolet Silverado 3500 HD WT
2018 Chevrolet Silverado 2500 HD High Country
2018 Chevrolet Silverado 2500 HD LT
2018 Chevrolet Silverado 2500 HD LTZ
2018 Chevrolet Silverado 2500 HD WT
2018 Chevrolet Silverado 3500 HD High Country
2018 Chevrolet Silverado 3500 HD LT
2018 Chevrolet Silverado 3500 HD LTZ
2018 Chevrolet Silverado 3500 HD WT
2019 Chevrolet Silverado 2500 HD High Country
2019 Chevrolet Silverado 2500 HD LT
2019 Chevrolet Silverado 2500 HD LTZ
2019 Chevrolet Silverado 2500 HD WT
2019 Chevrolet Silverado 3500 HD High Country
2019 Chevrolet Silverado 3500 HD LT
2019 Chevrolet Silverado 3500 HD LTZ
2019 Chevrolet Silverado 3500 HD WT
