2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Rebuild Kits & Internal Parts

When it’s time to overhaul your 2017-2019 GM 6.6L Duramax L5P’s transmission, our Transmission Rebuild Kits & Internal Parts have everything you need to restore your truck’s performance. Whether you’re addressing wear and tear from years of hard work or upgrading to handle increased horsepower and torque, these rebuild kits and components are designed to bring your transmission back to life. Our rebuild kits include high-quality clutches, seals, gaskets, and other essential components, ensuring your transmission operates smoothly and reliably. For those seeking even more durability and performance, we offer upgraded internal parts such as heavy-duty bands and valve bodies that are specifically built to withstand the stresses of high-performance applications. GM Duramax Fitments: 2017, 2018, and 2019 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.