1. Turbulent air enters filter area.
2. Pleated multi-layered oil impregnated surgical cotton fabric.
3. Suspended dirt on the outside does not cause significant airflow restriction (to 50,000 street miles).
4. Oil barrier attracts and holds dirt to become additional filter medium.
5. Bonded cotton wire/mesh straightens airflow reducing turbulence.
6. Straightened and filtered high-volume air enters the intake system.