04-06 Ford F-150 V-8 5.4L Stage 2 Si Cold Air Intake System - The AFE cold air intake is a great example of continuous refinement triumphing over breakthrough technology...

The AFE cold air intake is a great example of continuous refinement triumphing over breakthrough technology. Cold air intake works by channeling cooler air from outside the engine bay into the engine. AFE cold air intake beats its competitors in the design of its AFE cold air intake filter. The AFE cold air intake filter is high-flow and reusable. The filter found in an AFE cold air intake has been computer-designed to ensure that it achieves maximum airflow and efficiency in all operating conditions. The AFE cold air intake filter has specially-angled pleats of differing thicknesses. This allows the AFE cold air intake to resist clogging and allow more filtered air into the engine. The AFE cold air intake filter also incorporates a 100% polyurethane seal to prevent air from bypassing the filter media. The polyurethane seal found on the AFE cold air intake is much more durable than foam seals, which is why your AFE cold air intake filter is truly a lifetime air filter. It all adds up to continuous refinement, the AFE cold air intake way. And now you can add an AFE cold air intake to your engine in one of two different configurations, Stage One or Stage Two. Either way you go, you’re going to love the free-breathing, rev-happy character of your motor with an AFE cold air intake installed. • Magnum Force Stage One, The Stage One version of the AFE cold air intake includes the keystone AFE cold air intake conical filter and a new airbox housing. The factory airbox is replaced by the AFE cold air intake housing, and on some applications, a heat shield is fitted to the AFE cold air intake. • Magnum Force Stage Two, For those who want all-out performance, the Stage Two AFE cold air intake adds an entire intake duct to the airbox and AFE cold air intake filter included in the Stage One kit. Featuring neoprene connections and a composite air tube to keep intake air cooler, the Stage Two AFE cold air intake provides the ultimate in free-breathing horsepower.