2006-2007 GM 2500HD/3500HD 6.6L LBZ Duramax Intercoolers

An aftermarket Intercooler is a great way to unlock new levels of power and performance out of your 2006-2007 GM 6.6L Duramax. Here at Alligator Performance, we carry a ton of Intercooler upgrades that will offer a more efficient flow-through design and faster heat dissipation to help improve any issues associated with restrictive airflow. By allowing your engine to breathe easier, you'll experience an improvement in both horsepower and torque whether you're towing a trailer, tackling new terrain, or simply passing someone on the highway. These new intercoolers are also engineered to handle the increased boost pressures that come with aftermarket tuning or turbo swap applications, keeping you under control during extreme driving applications. Take your Sierra/Silverado a step further by checking out our selection of Cold Air Intakes and Turbo Upgrades! GM Duramax Fitments: 2006, 2007 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.