The Banks Ram-Air Intake System delivers exceptional airflow and air density, while still maintaining a closed airbox which provides for fewer cleanings. With its giant 7-1/8" outlet, streamlined components and enclosed cold-air box that keeps hot engine air out of the intake, the Ram-Air flows up to 57% better than stock. This system will improve power and fuel economy, lower exhaust gas temperatures, and reduces black smoke. And Banks' unique 5" bellows accommodate engine movement, which prevents component damage and prolongs service life. Lifetime warranty on filter element