Looking for an easy way to increase horsepower and torque in your 2001-2004 Duramax truck? Look no further than the AEM 21-8013 Brute Force Intake. This powerful intake is designed to fit in the original air box space and is surrounded by a heat shield, making it easy to install with commonly available tools. The AEM Dryflow air filter uses oil-free, synthetic filter media that can go up to 100,000 miles before it needs to be cleaned. Plus, this intake has been dyno-tested to improve acceleration and engine sound. So don't wait any longer, order your AEM 21-8013 Brute Force Intake today!