2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Differentials

The 2017-2019 GM 6.6L Duramax L5P is already a powerhouse in its stock form, but even the most capable trucks can benefit from improved traction and handling in tough off-road conditions. Aftermarket differentials are the key to maximizing power delivery to both wheels on a single axle, especially in low-traction environments. Whether you’re tackling extreme off-road terrain or navigating slick roads, upgraded differentials ensure you maintain control and performance. Choose from limited-slip, automatic lockers, or manual lockers to suit your driving style and needs. And be sure to pair your new differential with a complete Gear Package for the ultimate performance on and off the road. GM Duramax Fitments: 2017, 2018, 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.