<h3>Key features</h3><ul> <li>[Package include]: 1 * Air Filter ( 544080801 ) , 1 * Air Purge ( 503936601 ) , 1 * Hose Airpurge Suction ( 544401901 ) , 1 * Return Hose ( 577535101 )</li> <li>[Replace Part Number] :544080801 503936601 544401901 577535101</li> <li>[Compatible Models]: For Husqvarna 450, 445E, 450E, 450 Racnher, 450 E Ii, 450 Ii Chainsaws</li> <li>[100% Satisfaction Guarantee] : 90 days return, refund or free exchange if you aren't completely satisfied (defection, accidental damage, non-satisfaction etc.) Any problem please do not hesitate to contact us.</li> <li>[Note]: Please compare it with your original parts before ordering it to see if it can fit your original chainsaw.</li> </ul><p>Free shipping included. 30-day hassle-free returns.</p>