Check the listing for details. Uni Replacement Air Filter UK-1921ST. Condition: New. Listed at 39.99 USD. Genuine Uni Filter Products: Uni Filter products perform their best in the worst of conditions. That’s why Uni has been the chosen air filter of all serious off-roaders for decades. In this dirty, dusty environment, air filtration is extremely critical to the performance and protection of the engine. Product Details: Designed to fix problems of the factory set up. No drilling into the air box required. Includes aluminum adaptor and gasket seal About Us: LeClare Powersports is a small-town Parts and Accessories store in Springfield, MO. Our low overhead allows us to offer better prices than the 'Big Boys', but our owner-operated store allows us to give our customers the great customer service they deserve. We only sell brand new, high quality GENUINE name-brand aftermarket parts...no junk, no knock offs and no "seconds". Buy with confidence!