K&N Engine Air Filter for Ford Super Duty – KNA-5100 18,000‑Mile Long-Life High-Flow

K&N’s KNA-5100 Engine Air Filter is a direct-fit, long-life replacement designed to protect your Super Duty engine for up to 18,000 miles with high airflow and durable filter media.

Built on K&N’s decades of filtration experience, this KNA-5100 model offers extended service intervals compared with conventional disposable filters while meeting or exceeding OEM fit and function. It uses a premium synthetic or cellulose-blend media (depending on application) engineered to capture contaminants effectively without restricting intake flow. The filter installs into the factory air box in minutes and is compatible with 2020–2026 Ford F250, F350, F450, F550, and 2022 Ford F600 Super Duty models.

How does this filter differ from a standard 12,000-mile replacement?

The KNA-5100 is built for a longer service cycle and tougher use. Its media and construction extend replacement intervals to 18,000 miles, reducing parts and maintenance frequency while keeping filtration performance high.

• Up to 50% longer service life versus typical 12,000-mile disposable filters.
• Premium synthetic or cellulose-blend media for consistent particle capture.
• Durable frame and sealing to maintain fit and airflow over extended use.

Will this filter protect my engine without hurting performance?

Yes — the KNA-5100 balances filtration efficiency and airflow so your engine breathes freely while staying protected. The design minimizes restriction, supporting normal power and fuel efficiency for Super Duty applications.

• Engineered media delivers up to 99% filtration efficiency.
• High-flow construction helps preserve throttle response and performance.
• Direct-fit form keeps the factory intake geometry intact for reliable operation.

How easy is installation and maintenance for everyday drivers?

Installation is straightforward and typically requires no tools — the filter drops into your stock air box like the original part. Maintenance is simply scheduled replacement every 18,000 miles under normal highway driving conditions.

• Direct replacement that installs in minutes with no modifications.
• Replace every 18,000 miles under normal driving; adjust interval for dusty conditions.
• Designed to meet or exceed OEM specifications for fit and sealing.

Which vehicles and use-cases is the KNA-5100 intended for?

This filter is tailored for Ford Super Duty trucks where a durable, long-life air filter is desired. It suits daily drivers, work trucks, and towing applications that benefit from reduced service frequency without compromising protection.

• Compatible with 2020–2026 Ford F250, F350, F450, F550 and 2022 Ford F600 Super Duty models.
• Good for highway driving and mixed-use fleets where extended intervals reduce downtime.
• Appropriate for owners who want OEM-fit reliability with improved service life.

Who is this for: The KNA-5100 is ideal for Ford Super Duty owners who want a worry-free, long-life air filter that fits the factory air box, delivers high filtration efficiency, and reduces how often the intake system needs attention. It’s a practical upgrade for truck drivers who value durability, straightforward installation, and extended service intervals without altering engine performance.