Replacement Air Filter

Features:

• Cleanable and reusable for long life
• Fits factory air box perfectly
• Works with OEM electronics seamlessly
• Designed for high airflow and efficiency
• Improves throttle response and acceleration
• Lasts up to 50,000 miles between cleanings
• Legal in all 50 states for emissions
• Backed by K&N’s Million-Mile Warranty
• Drop-in installation with no modifications
• Maintains manufacturer warranty compliance
• Heavy-duty construction for tough conditions
• Boosts performance without extra tuning

Let Your Truck Breathe Like It Was Meant To

If you’re still running the stock paper filter on your Super Duty, it’s time for an upgrade that actually pays off. The K&N E-0644 Replacement Air Filter isn’t just about keeping dirt out, it’s built to boost airflow and improve how your truck performs every single day. You’ll notice quicker throttle response and smoother acceleration without needing to change anything else under the hood. It installs in minutes and fits snugly in your factory air box, so there’s no cutting, tuning, or messing around. This isn’t some one-time-use throwaway either. It’s washable, reusable, and built to last up to 50,000 miles between cleanings depending on how you drive. Whether you’re towing a trailer, hauling tools, or just want your truck to feel more alive, this filter is an easy win. Plus, it’s backed by K&N’s Million-Mile Warranty, so you know it’s in it for the long haul.

Engineered To Protect While Delivering Real Performance

The K&N E-0644 Replacement Air Filter is designed with performance and reliability in mind, using advanced filtration technology that allows more air to pass through while still capturing harmful contaminants. It features multiple layers of oiled cotton media that provide a durable barrier against dust and debris without restricting airflow. This balance is critical for diesel and gas engines alike, particularly in the 2017-2020 F250 and F350 platforms. The filter supports both the 6.7L Powerstroke and 6.2L Gas V8 engines, offering the same precise fit and factory compatibility across these applications. It works seamlessly with all OEM sensors and electronics, maintaining vehicle functionality without requiring any modifications. The high-flow design is engineered to promote better combustion, which can help improve throttle responsiveness and fuel efficiency in real-world driving. With emissions legality in all 50 states, this filter not only delivers on performance but also meets strict regulatory standards for everyday use. It’s a smart, maintenance-friendly upgrade built for trucks that work as hard as their owners.

Fits:  2017, 2018, 2019 Ford F250/F350 Super Duty 6.7L Powerstroke/6.2L V8

Notes:

• Compatible with 2017-2020 F250 and F350 models
• Fits both 6.7L Powerstroke and 6.2L Gas V8 engines
• Installs directly into the factory air box
• Requires no tuning or vehicle modifications
• Designed for use with OEM electronics and sensors
• Legal for use in all 50 U.S. states
• Can last up to 50,000 miles before cleaning
• Washable and reusable design reduces long-term cost
• Covered by K&N’s Million-Mile Limited Warranty
• Intended for use on vehicles in good condition