K&N Engine Air Filter for Toyota & Lexus SUVs KNA-2438 — 2010–2024 Fit, 18,000‑Mile Long Life

K&N KNA-2438 is a long-life engine air filter engineered to protect and maintain airflow for select 2010–2024 Toyota and Lexus V6/V8 SUVs, offering up to 18,000 miles of service between replacements.

This high-performance replacement air filter fits factory air boxes on Toyota 4Runner (2010–2024), Lexus GX460 (2010–2023) and Toyota FJ Cruiser (2010–2014). Built with K&N’s advanced filter media, the KNA-2438 balances strong particle filtration with consistent airflow so your engine breathes clean air while maintaining OEM fit and function. It installs in minutes and is designed to meet or exceed original equipment specifications, providing drivers a dependable, longer-life alternative to disposable filters.

How does this filter improve maintenance intervals for my SUV?

The KNA-2438 is designed for up to 18,000 miles of normal highway driving between replacements, extending service intervals compared with many standard 12,000-mile disposable filters. That means fewer replacements and less time spent on routine air filter changes during regular driving cycles.

• Rated for 18,000 miles of typical highway driving before replacement.
• Approximately 50% longer life versus common 12,000-mile filters.
• Simple swap into the factory air box—installation in minutes.

What level of engine protection and filtration efficiency can I expect?

K&N uses a premium synthetic or cellulose blend media (application dependent) engineered to capture the majority of airborne particulates while allowing steady airflow. The design provides up to 99% efficiency at trapping damaging particles that could otherwise reach the intake system, helping preserve engine components.

• Premium filter media with high particle-capture performance.
• Engine protection rated up to 99% against common airborne contaminants.
• Constructed to meet or exceed OEM filtration specifications for the listed models.

Will this filter fit my vehicle and is it easy to install?

The KNA-2438 is a direct-fit replacement engineered for seamless installation into the stock air box of compatible Toyota and Lexus SUVs—no modifications required. Most owners can change the filter using basic tools and in just a few minutes following the vehicle’s service instructions.

• Direct compatibility: 2010–2024 Toyota 4Runner, 2010–2023 Lexus GX460, 2010–2014 Toyota FJ Cruiser.
• Designed to match OEM dimensions and attachment points for a secure fit.
• Installable using common hand tools; no special parts needed.

What are the durability and warranty details?

K&N builds the KNA-2438 with rugged construction intended to withstand normal under-hood conditions over its rated life. The filter is backed by a 1-year limited warranty for added confidence against manufacturing defects.

• Durable construction for extended service life up to 18,000 miles.
• 1-year limited warranty from K&N against qualifying defects.
• Meets or exceeds OEM material and performance expectations.

Who is this for: The K&N KNA-2438 is aimed at owners of compatible Toyota and Lexus SUVs who want a reliable, longer-lasting OEM-fit replacement air filter. Choose it if you prefer fewer filter changes, expect steady engine protection and want a product engineered by a long-established performance filtration brand. It’s not a universal filter—verify model-year compatibility before purchase.