Replacement Air Filter

The K&N 33-5100 is a high-performance replacement air filter engineered to enhance your 2020-2026 Ford F-250, F-350, F-450, F-550, or F-600 Super Duty. This design contributes to an increase in horsepower and overall vehicle performance. The flexible frame and straightforward design allow for easy installation directly into your vehicle's factory air box, making it a simple yet effective upgrade. Maintenance is minimal, as the K&N 33-5100 is washable and reusable, requiring cleaning only every 50,000 miles under normal highway driving conditions. This makes it a cost-effective and environmentally friendly choice compared to disposable filters. The filter is emissions legal in all 50 states, ensuring compliance with regulations. This K&N replacement air filter comes with a 10-Year/Million Mile Limited Warranty, providing long-term peace of mind. It is noted to fit both Gas and Diesel models within the specified year range. According to customer Q&A, it is confirmed to fit 2021 Super Dutys with the 7.3L gas motor.