AEM Brute Force Intake System 2008 Ford F150 4.6 L. AEM BRUTE FORCE AIR INDUCTION SYSTEM -- Up to 99.52 percent filtration efficiency; Includes powdercoated silver intake tube, synthetic air filter, steel powdercoated heat shield, and a complete mounting kit with comprehensive installation instructions for a perfect fit; Dyno-tuned to produce maximum horsepower and torque by strategically locating the air filter in the coolest and safest section of the engine compartment; Features Dryflow Synthetic Air Filter that is proven to be highly efficient in fine dust testing, filtering dirt as small as one micron; Its mandrel-bent inlet pipe is constructed out of light but durable T-6063 aluminum with reinforced TIG-welded brackets and fittings for maximum flow and added durability; Manufactured and assembled in the USA; Guaranteed for life of the vehicle by AEM.