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

Give your 2017-2019 GM 6.6L Duramax L5P's engine bay a new makeover with our selection of engine accessories here at Alligator Performance! Whether you're looking to add some custom style under the hood or seeking functional upgrades to boost your truck’s reliability, we have what you need. From sleek billet oil fill caps that add a touch of personalized flair, to high-performance harmonic balancers that reduce engine vibration and improve overall durability, these accessories are designed to optimize your engine’s performance all while giving it a unique look. 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.