Fleetguard CV50633 Crankcase Ventilation Kit Fleetguard Crankcase Ventilation Kit CV50633 replaces Fleetguard CV50607 Crankcase Ventilation Kit OCV Element Assembly used on Cummins ISX/ISM engines Replaces CV50601 CV50601 Aluminum Tool CV50607 Steel Tool unavailable Cummins 3683918 ***Sold as a 1 Filter