146682 Fram Group P8043 Fram, P8043, Heavy Duty, Secondary Spin On, Fuel Filter, Application Specific Media Designed To Meet The Needs Of Each Engine, Primary Filters Are Designed For Balance Between Low Restriction Required Efficiency, Secondary Filters Are Designed For Maximum Particle Removal To Prevent Wear In Injectors, Pumps Valves, Designed As A Fuel System Primary Secondary Working Together For Optimum Fuel System Performance, Filter Bodies Bottom Plates Are Engineered To Resist Pressure Vibrations Encountered In Use.