Increases Mass Air Flow by 36% vs stock for more power and better fuel economy. Enclosed housing keeps out hot power-robbing heat with direct access to cool air. Largest capacity air filter on the market for extended service life between cleaning. Super Duty Ram-Air Induction. Banks Ram-Air Intake feeds your 6.7L Power Stroke engine cooler, denser, outside air for greater power and fuel economy. Unlike the OEM airbox with its harsh bends and internal baffles, the Ram-Air's streamlined and optimized shape maintains air velocity and increases air density. Experience the benefits of greater flow, performance, and sound over stock. Its performance is extensively tested using Computational Fluid Dynamics software, validated on the flow bench, and proven on the vehicle in the real world. Key Features: "Big Ass Filter" extends service life and requires fewer cleanings. Side fender vent for additional sound and cold air induction. Unique silicone elbow with bellows allow for engine movement. Over 116.7 in2 more filtration media vs our closest competitor. Massive two piece XLPE airbox insulates against heat soak. Enclosed housing keeps out hot, power-robbing engine air. Largest filter on the market with 537.3 in3 total volume. Oversized airbox increases cool air volume around filter. More audible and aggressive induction note. Connects to OEM forward air inlet. 5-year limited warranty. Oiled air filter element. No check engine light