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2004.5-2005 GM 2500HD/3500HD 6.6L LLY Duramax Sumps, Accessories & Additives

After building an aftermarket fuel system to your 2004.5-2005 GM 6.6L Duramax LLY build, yet you've noticed you're not getting as far as you once used on a full tank of gas. Draw more fuel from your tank with the help of gravity by investing in any of the premium Fuel Sumps we offer here at Alligator Performance! GM Duramax Fitments: 2004, 2005 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.

GM Duramax>2004.5-2005 6.6L LLY

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2004.5-2005 6.6L Silverado & Sierra 2500HD/3500HD

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Welcome to The Garage – your one-stop shop for all your car care and maintenance needs. From premium oils and filters to top-notch car care products, we have everything you need to keep your vehicle running smoothly and looking its best. Whether you're a DIY enthusiast or a professional mechanic, our carefully curated selection of high-quality products will help you take care of your ride like never before.

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