PRODUCT DETAILS ncreased airflow Excellent filtration Longer service life Easy to install 50 State emissions legal DRY Air Filter Element For use w/ Ram-Air System 1999-14 Chevy/GMC - Diesel/Gas DESCRIPTION Banks Ram-Air filter is a lifetime, high-flow air-cleaner element that decreases intake restriction and sends more cool, dense ram-air into your engine. Banks Ram-Air filters outperform conventional ones, because the multi-layer design traps moisture, dust and debris on the outer surface, allowing air to move through with ease.