Banks Ram-Air filter is a high-flow air-cleaner element that decreases intake restriction and sends more cool, dense ram-air into your engine. Even wet or dirty, Banks Ram-Air filters outperform conventional ones, because the multi-layer design traps moisture, dust, and debris on the oiled, outer surface, allowing air to move through with ease. Easy to install replacement filter (oiled or dry). Increased airflow, excellent filtration and longer service life. Key Features: Increased airflow. Excellent filtration. Longer service life. Easy to install. OILED or DRY Air Filter Element. For use w/ Ram-Air System: 41849 Ford 6.7L Power Stroke