Upgrade your semi with essential parts that come with Expertise Built In™ like the OTR OTR10621 Cabin Air Filter, designed to provide clean and breathable air throughout the cabin. To create a more comfortable environment, this replacement air filter system cleans the air of dirt, dust, and other contaminants before they can enter the cabin of a vehicle. Fashioned with innovative and efficient technology to extend service intervals and reduce how often each filter should be changed. OTR understands what it takes to repair and maintain Class 6-8 trucks, so they deliver solutions, making your job easier and more efficient. OTR warranties are comparable to or better than OE and top brands. All heavy duty truck parts offer the same form, function, and fit as the OE replacement parts. FleetPride is your First Click in Heavy Duty®.