Easy to install replacement filter (oiled). Increased airflow, excellent filtration and a longer service life. 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. Key Features Increased airflow Excellent filtration Longer service life Easy to install OILED Air Filter Element For use w/ Ram-Air System: Ford 6.9/7.3L Sidewinder and Jeep 4.0L