2001-2004 GM 2500HD/3500HD 6.6L LB7 Duramax Intercoolers

A brand new Intercooler might be just what you need to get and extra boost of power and performance out of your 2001-2004 GM 6.6L Duramax's engine. One of the main benefits that comes with upgrading your factory intercooler is the increased levels of both horsepower and torque you'll experience during high-performance applications. A new intercooler will also help accommodate for the increased boost pressures associated with custom tuning or a complete turbo swap, keeping your ride under control each time you get behind the wheel. Whether you're towing a trailer or exploring new landscapes, our selection of aftermarket intercoolers will help push your truck's overall performance to the limit. Pair your new intercooler with a new Cold Air Intake or some premium Turbo Upgrades to unlock even more potential hidden under the hood of your Sierra/Silverado. GM Duramax Fitments: 2001, 2002, 2003, 2004 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.