K&N Engine Air Filter KNA-2438 for Toyota/Lexus SUVs — Long-Life 18,000‑Mile, High‑Efficiency

K&N KNA-2438 is a long‑life engine air filter engineered to deliver up to 18,000 miles of reliable airflow management and up to 99% particle protection for compatible Toyota and Lexus V6/V8 SUVs.

This high‑performance replacement air filter fits directly into the factory air box of select Toyota and Lexus SUVs and is built to meet or exceed OEM specifications. Compared with standard disposable filters, the K&N Advantage Plus media and rugged construction extend replacement intervals while maintaining consistent airflow and engine protection. The result is a ready‑to‑install, maintenance‑friendly option for drivers who want durable filtration without frequent swaps.

How does the K&N KNA-2438 improve routine maintenance?

The KNA-2438 reduces how often you change your engine air filter by offering a longer rated service life. That cuts down on parts purchases and time spent during scheduled maintenance while keeping filtration performance high for typical driving.

• 18,000‑mile recommended replacement interval under normal highway driving.
• Premium synthetic/cellulose blend media for consistent filtration over extended use.
• Designed to drop into the original air box—no modifications required.

Will this filter protect my engine without restricting airflow?

K&N designs its Advantage Plus media to balance high particle capture with stable airflow characteristics. The filter provides up to 99% efficiency at capturing contaminants, helping protect intake components while preserving engine breathing for normal driving conditions.

• High‑efficiency media catches dust and particulates down to fine sizes.
• Engineered to meet or exceed OEM airflow and fitment standards.
• Proper installation preserves factory airflow paths and sensor performance.

Which vehicles will this air filter fit and how easy is installation?

The KNA-2438 is specified for multiple Toyota and Lexus V6/V8 SUVs built between 2010 and 2024. Install is straightforward: remove the factory filter, seat the K&N element into the air box, and reassemble—no tools or alterations typically required.

• Compatible applications include Toyota 4Runner (2010–2024), Lexus GX460 (2010–2023), Toyota FJ Cruiser (2010–2014).
• Direct OEM‑style replacement that fits the factory air housing.
• Installation usually takes only minutes during routine service.

What are the build quality and warranty details?

K&N manufactures the Advantage Plus line with durable materials to withstand normal under‑hood conditions and provide a predictable service life. The filter includes a limited warranty, and the construction is intended to meet the same fit and durability expectations as original equipment components.

• Rugged construction for up to 18,000 miles of use.
• 1‑year limited warranty from K&N.
• Meets or exceeds OEM specifications for fit and function.

Who is this for: The K&N KNA-2438 is ideal for owners of compatible Toyota and Lexus SUVs who prefer a longer‑interval, OEM‑fit replacement air filter. It suits drivers who want dependable filtration and straightforward, tool‑free installation—particularly those who do significant highway driving and would like to reduce service frequency without sacrificing engine protection.