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

One of the easiest and most effective upgrades you can install on your 2001-204 GM 6.6L Duramax is the addition of a new intercooler and piping kit. Upgrading the factory intercooler and pipes equipped on your Sierra/Silverado 2500HD/3500HD will help improve the overall engine efficiency of your ride in practically no time at all. With just a few simple upgrades, you'll experience an immediate boost in both horsepower and torque, giving you an extra boost of confidence during any high-performance applications. An upgraded intercooler system will even handle the increased boost pressures associated with custom tuning or turbo swap applications, keeping you under control in even the most extreme situations. Pair your new intercooler with an aftermarket Cold Air Intake or some premium Turbo Upgrades to take your truck to the next level. 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.