Today's high performance engines and tougher emissions standards demand higher-performing air intake systems. Cellulose media which is resin-treated and corrugated to maximum depth for a greatly increased air filtering surface and precise channels for better airflow, Primary Type, Radialseal style, evenly spaced pleats and radial design for optimum contaminant-holding capacity, closed end urethane design prevents the possibility of moisture-related rusting. For your convenience, this filter is included in the maintenance kit for your equipment. Bobcat outer air or primary engine filter, radial seal design, housed in a cylindrical air cleaner Resin-treated cellulose media corrugated to maximum depth for a greatly increased air filtering surface Precise channels for better airflow Evenly spaced pleats for optimum contaminant-holding capacity Closed end urethane design prevents the possibility of moisture-related rusting Replace every 500 hours Easy to install Due to engineering standards, some parts are updated or changed and are assigned a new part number. Previous part number was 7383345. This part is the direct replacement.