CHAINSAW AIR FILTER COMPATIBLE WITH HUSQVARNA JONSERED TECHNICAL SPECIFICATIONS HUSQVARNA MODELS: 355 FRM , 355 FX , 355 FXT , 355 RX , 555 FRM , 555 FX , 555 FXT , 555 RXT JONSERED: BC 2255 , BC 2256 , FC 2255 , FC 2255 W , FC 2256 , FC 2256 W , MC 2255 , MC 2256 CODE: 40272630 ORIGINAL CODE: 505 03 10-03 , 505 03 10-04 , 505 03 10-02 , 505 03 10-01 SR - AH m