Husqvarna Part Number 503910671 Chain Catcher This is an O.E.M. authorized part Fits various Husqvarna models OEM Part Number 503910671 This is a Husqvarna replacement part Part Number 503910671 This is an O.E.M. part This is an O.E.M. authorized part OEM Part Number 503910671 This is a Husqvarna replacement part Part Number 503910671