K&N Engine Air Filter KNA-5109 — 18,000-Mile Long-Life Replacement for Hyundai & Kia, Tool-Free Install

The K&N KNA-5109 is a long-life engine air filter engineered to provide up to 18,000 miles of reliable filtration and easy, tool-free replacement in compatible Hyundai and Kia models.

Built on K&N's decades-long filtration experience, this 18,000-mile replacement filter uses a premium synthetic or cellulose-blend media (depending on application) and a rugged construction to meet or exceed OEM fit and filtration needs. It installs directly into the factory air box in minutes and is designed to deliver consistent airflow control while helping protect the engine from particulates. The KNA-5109 fits a range of Hyundai and Kia vehicles from model years 2020–2026, offering a longer service interval than many standard disposable filters.

Which vehicles is the KNA-5109 compatible with?

The KNA-5109 is specified for several recent Hyundai and Kia models; always confirm fitment with your VIN or vehicle specifications before purchase. Common compatible vehicles include the Hyundai Santa Fe, Sonata, and Tucson, and the Kia Sorento, Sportage, and Sorento IV across model years 2020–2026.

• 2021–2026 Hyundai Santa Fe
• 2020–2026 Hyundai Sonata
• 2021–2026 Hyundai Tucson
• 2021–2026 Kia Sorento; 2020–2024 Kia Sorento IV
• 2023–2026 Kia Sportage

How does the 18,000-mile interval compare to standard filters?

This K&N filter offers a longer service life than many 12,000-mile disposable filters, extending replacement intervals for everyday drivers. The longer interval reduces the frequency of filter swaps and can lower maintenance time and waste over the life of the vehicle.

• Rated for up to 18,000 miles under typical highway driving conditions.
• Approximately 50% longer service life versus standard 12,000-mile designs.
• Replacement timing depends on driving conditions; dusty or off-road use may shorten service life.

What materials and performance characteristics does this filter provide?

The KNA-5109 uses a premium synthetic or cellulose-blend media tailored to the application to balance filtration efficiency and airflow. K&N specifies up to 99% particle filtration efficiency for these media types, and the filter's sturdy frame and sealing surfaces help maintain a consistent fit inside the factory air box.

• Premium synthetic or cellulose-blend media for high filtration performance.
• Sturdy construction designed to withstand typical engine bay conditions.
• Engine protection-focused design while maintaining required airflow.

Is installation difficult, and what maintenance is required?

Installation is straightforward: the KNA-5109 drops into the factory air box and typically requires no tools, making it a quick DIY job for most owners. Replace every 18,000 miles during normal highway driving, and inspect the filter more frequently in dusty or severe conditions.

• Usually installs in minutes with no tools needed.
• Inspect during routine service intervals; replace every 18,000 miles under normal conditions.
• Follow vehicle manufacturer guidance for final fitment and procedures.

Who is this for: The K&N KNA-5109 is ideal for owners of the listed Hyundai and Kia models who want a longer-lasting replacement filter that balances filtration efficiency with simple installation. It suits drivers who prefer reduced maintenance frequency and a durable, OEM-fit replacement without modifying the factory air box. If you drive frequently on highways and want a straightforward, reliable filter option that aligns with OEM specifications, the KNA-5109 is a practical choice.