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.