Uni Filter 2016 Arctic Cat Alterra 500 / 550 / 19-21 Alterra 570 / 2015 XR 500/ 550/ 700 Air Filter - NU-8612ST

For over 50 years, Uni Foam Air Filters have been unsurpassed in both engine protection and overall performance. Their unique two-stage design produces more horsepower and more torque than any other air filter for your ATV.