Starting Line Products Intake Pre Filter These pre-filter vent kits help eliminate dirt and other heavy particles from getting into the intake for prolonged air filter life and into the clutches for longer clutch life. It replaces the stock foam and vent cover and provides more intake surface area. Utilizes a special pre-filter material that repels water and dirt, yet maintains high airflow. Kit includes a pre-filter vent for both the engine and clutch intakes as well as rivets for installation.