This is a A-B1AF146 Air Filter PN: B1AF146Main Description As Following : A-B1AF146 Air Filter P.N: B1AF146 Dim A (1): 4-1/16" LDim B (2): 4" WDim C (3): 3-3/16" H Crossed From: 50-614-58-01 HUSQVARNA , 506 14 58 01 HUSQVARNA , 506 14 58-01 HUSQVARNA , 506-14-58-01 HUSQVARNA , 5061458-01 HUSQVARNA , 506145801 HUSQVARNA , 605-299 STENS , 605299 STENS , 9956 ROTARY Found in Section & Models : Sunbelt - Air Filters > Air Filters, Husqvarna CUT-OFF SAW: 268K, Husqvarna CUT-OFF SAW: 272K, Sunbelt - Chainsaw & Forestry > Cut-Off Saws, Husqvarna CUT-OFF SAW: 268K, Husqvarna CUT-OFF SAW: 272K Associated Items : New Also This is An Aftermarket Product And : Dim A (1): 4-1/16" L Dim B (2): 4" W Dim C (3): 3-3/16" H