Looking for an easy way to add some extra horsepower and torque to your 2004.5-2005 GM 6.6L Duramax LLY truck? Look no further than the AEM 21-8017 Brute Force Intake. This intake is designed to fit in the original air box space and is surrounded by a heat shield for maximum efficiency. It's also been dyno-tested to ensure that it improves acceleration and engine sound. So if you're looking for a quick and easy way to get some more power out of your truck, the AEM 21-8017 Brute Force Intake is the way to go.