2020-2025 GM 2500HD/3500HD 6.6L L5P Duramax Sumps, Accessories & Additives

Maximize the efficiency and performance of your 2020-2025 GM 6.6L Duramax L5P with our selection of fuel sumps, accessories, and additives at Alligator Performance! Fuel sumps help ensure consistent fuel delivery by drawing fuel from the bottom of the tank, which is especially useful for trucks with lift pumps or modified fuel systems. This upgrade reduces fuel starvation, ensuring your engine gets the steady flow it needs even when you're running on low. We also offer a range of fuel system accessories to improve installation, maintenance, and performance, as well as fuel additives that boost lubrication, increase cetane levels, and help your fuel system remain clean. GM Duramax Fitments: 2020, 2021, 2022, 2023, 2024, 2025 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.