AFE Stage 1 Pro 5 R Cold Air Intake System for GM Trucks 06-07 V8-6.6L LLY/LBZ. This duramax intake Increases horsepower up to 25 HP depending on application, a must for duramax performance. The quality diesel air intake systems for the GM Duramax improve torque up to 38 ft/lbs depending on application. Maximizes airflow for better acceleration and responsiveness. Improved performance results in greater fuel efficiency. Installs in less than 60 minutes using factory mounting points. No cutting or drilling to engine compartment is required. Replaces OEM air filter with high flow high performance 360 degree radial flow air filter. Washable/reusable air filter with the deepest pleats in the industry is the largest possible in the space allowed. Replaces factory air box with a heat-blocking shield that seals to the hood. Replaces factory intake tube with a custom-designed intake tube that accelerates airflow to the turbo or throttle. Limited lifetime warranty. Please call or email with any questions on this product. Part # AFE 54-10882