HIPA (Pack of 2) 530029811 Top Air Filter for Husqvarna 36 41 136 136LE 137 137E 141 141LE 142 142E Gas Chainsaw Replace manufacture part number: 530029811, 530-029811 Fitment models: Husqvarna 36 41 136 136LE 137 137E 141 141LE 142 142E Chainsaw Qty: 2pcs Please check the sizes carefully, make sure it work for your needs