Riello 3005719 Oil Burner Pump Screen (Oil Pump Filter Screen) Used On F3, F5, F10, F15, F20, BF3 And BF5 Oil Burners Using A 3007802 (7001010, C7001010) Oil Pump ***Note: Does NOT Include An O-Ring For The Pump Housing. If You Also Need An O-Ring See C7010002***