K&N Engine Air Filter KNA-2451 for Hyundai & Kia — Long-Life 18,000 Mile Replacement, OEM Fit

K&N KNA-2451 is a long-life engine air filter engineered to protect your Hyundai or Kia engine for up to 18,000 miles between replacements. K&N has supplied vehicle filtration solutions since 1969, and the KNA-2451 model brings a longer service interval and robust filtration to a wide range of Hyundai and Kia models. This replacement air filter fits factory air boxes and swaps in quickly, offering a higher-efficiency media blend designed to stop most airborne contaminants while maintaining proper airflow. It’s built to meet or exceed OEM fit and function so you can restore or maintain engine protection without sacrificing convenience.

Which vehicles will this K&N filter fit?

This KNA-2451 cartridge is matched to many Hyundai and Kia applications spanning model years roughly between 2010 and 2024. Compatibility covers hatchbacks, sedans, crossovers, and compact SUVs where the factory air box accepts this specific filter shape and size.

• Hyundai: Elantra, Elantra GT/Coupe, i30 (I–III), ix35, Tucson, Santa Fe II, Creta/IX25, Langdong
• Kia: Forte, Forte5, Forte Koup, Cerato/Cerato Koup, K3/K2, Carens, cee'd, Sportage, Seltos, KX3
• Model years included: primarily 2010–2024 depending on model and market.
• Always verify OEM part equivalence or fitment with your vehicle’s year and engine variant before purchase.

How does the KNA-2451 improve engine protection and service life?

This K&N filter uses a premium synthetic or blended media depending on the application to balance airflow with particle capture. Its engineered construction delivers high efficiency—helping to trap contaminants up to the claimed protection rate—while extending the replacement interval over many standard disposable filters.

• Up to 18,000 miles of service under typical highway driving conditions.
• Premium media designed to achieve high filtration efficiency (up to the stated protection percentage).
• Durable frame and sealing surfaces to maintain proper airbox fit and reduce bypass risk.
• Designed to meet or exceed OEM specifications for fit and performance.

Is the filter easy to install and maintain?

Yes—the KNA-2451 is made to drop into the vehicle’s stock air box and fasten in place with factory clips or screws. Installation is generally a quick service that requires only basic hand tools, and there are no special procedures beyond confirming a good seal and correct orientation.

• Quick swap installation in minutes using your vehicle’s existing air box.
• No special oils, coatings, or extra accessories required for standard replacement.
• Inspect and replace every 18,000 miles under normal driving; more frequent checks in dusty or off-road conditions.

What warranty and quality assurances come with this K&N filter?

The KNA-2451 is covered by a limited warranty, reflecting the manufacturer’s confidence in materials and workmanship. It’s produced under K&N’s established quality controls, which have supported their reputation in performance filtration since the late 1960s.

• 1-year limited warranty included with the filter.
• Manufactured using K&N’s production standards to meet or exceed OEM requirements.
• Backed by decades of filtration engineering experience from K&N.

Who is this for? This K&N KNA-2451 is ideal for Hyundai and Kia owners who want a straightforward, longer-life replacement to the factory disposable air filter—drivers seeking reliable engine protection, reduced replacement frequency, and a product built to OEM-fit standards. If you regularly drive on highways or less challenging conditions and want to limit how often you service the intake filter while keeping solid filtration performance, this model is a practical choice. Always confirm vehicle fitment against your exact year and engine before ordering.

FAQ

Q: How often should I replace the K&N KNA-2451?

A: Replace every 18,000 miles under normal highway driving; inspect sooner in dusty or off-road conditions.

Q: Will this filter fit my 2015 Hyundai Tucson?

A: The KNA-2451 is listed for many 2010–2015 TUCSON/ix35 model years; verify exact engine and OEM part number for fit.