2017-2019 GM 2500HD/3500HD 6.6L L5 Duramax Engine & Performance

The 2017-2019 GM 6.6L Duramax L5P's may come stacked with a ton of horsepower and torque straight off the factory line, but additional power and performance has never hurt any truck. Here at Alligator Performance, we carry a ton of engine parts and upgrades that are designed to give your 6.6L Duramax engine improved throttle response, power and performance, taking your GM 2500/3500 truck to the next level in every circumstance. Take a look at our selection of cold air intakes, tuners, fuel upgrades, and turbo upgrades to help you get the most out of your engine. Many of these upgrades like the cold air intakes and fuel upgrades help promote component longevity so you can enjoy a long-lasting and consistent performance without compromise. After you've added a few engine upgrades to your custom build, be sure to check out our premium 2017-2019 GM 6.6L Duramax L5P Transmission Upgrades to compliment the increase in power you're throwing down! 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.