Husqvarna Part Number 537143101 Air Filter This is an O.E.M. authorized part Fits various Husqvarna models OEM Part Number 537143101 This is a Husqvarna replacement part Part Number 537143101 This is an O.E.M. part This is an O.E.M. authorized part OEM Part Number 537143101 This is a Husqvarna replacement part Part Number 537143101