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

The more efficiently your 6.6L Duramax LB7 engine can breathe, the more power it can deliver for your 2001-2004 GM 2500HD/3500HD. Give your truck impressive airflow to improve both power and fuel efficiency with a new aftermarket cold air intake. As a bonus, many cold air intakes enhance your diesel's aggressive engine sound. Pair your cold air intake with an upgraded Exhaust System for even greater performance! 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.