2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Fuel System & Fuel Upgrades

The stock fuel system on your 2011-2016 GM Duramax 6.6L LML does not inject the cleanest fuel possible, leaving you with prematurely worn injectors and a ton of other unnecessary hassles down the line. Here at Alligator Performance, we offer a variety of premium aftermarket fuel systems along with other fuel accessories that will help extend the life of your injectors by providing clean fuel filtration without compromise. Our complete aftermarket fuel systems come standard with both a fuel pump and water separator that filters the diesel fuel in your GM 2500HD/3500HD to extremely low micron ratings in order to prevent contaminants from affecting your engine. For trucks that see cold temperatures, check out our Electric Heater Kits we offer to eliminate any potential fuel gelling which makes it difficult to cold start your engine. Alligator Performance offers trusted and reliable brands such as FASS, AirDog, Irate Diesel and more to bring you the best possible fuel upgrades for your 2011-2016 GM 2500/3500 Truck. Pair your fuel system upgrades with our Engine Upgrades! GM Duramax Fitments: 2011, 2012, 2013, 2014, 2015, 2016 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.