K&N Heavy-Duty Replacement Air Filters - Round Radial Seal - 38-2021R

K&N Heavy Duty air filters are washable, commercial-grade components engineered for heavy-duty trucks, RVs, and agricultural equipment. Utilizing a novel hybrid filtration medium, these filters are exceptionally easy to clean with power or pressure washers. Unlike disposable filters, K&N units offer long-term use, improving engine performance while simplifying maintenance. Designed for large turbo-diesel engines, Class 6-8 trucks, agricultural and earth-moving machinery, and diesel RVs, these filters endure extreme conditions. Their washable, lofted hybrid media reduces air restriction, enhancing power and efficiency with each cleaning. Requiring no oil, these filters maintain high performance for up to 300,000 miles. Available in universal or vehicle-specific designs.

Installation Instructions