Husqvarna Part Number 537107801 Chain Brake This is an O.E.M. authorized part Fits various Husqvarna models OEM Part Number 537107801 This is a Husqvarna replacement part Part Number 537107801 This is an O.E.M. part This is an O.E.M. authorized part OEM Part Number 537107801 This is a Husqvarna replacement part Part Number 537107801