CarCareTruth Score
Decent.
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Prices may varyThis product ranks #21 of 33 in Engine Air Filter.Three above it ↓
Last reviewed August 13, 2026
TL;DR A disposable cellulose blend drop-in for a broad 2010-2026 Toyota, Lexus, and Mitsubishi fitment list with an 18,000-mile service interval; fitment is confirmed by one independent database and well-reviewed by owners. The 18,000-mile interval is a manufacturer-stated claim with no community corroboration yet, and K&N's "up to 99% engine protection" figures cite no named test standard, placing this filter at OEM-equivalent quality rather than above it.
The KNA-2443 is a single-use disposable panel filter using a cellulose blend media, part of K&N's Advantage Plus line. The stated 18,000-mile replacement interval is 50% longer than a typical 12,000-mile OEM-spec paper filter, but this interval is a manufacturer claim; no community reviews document completing the full lifecycle as of the scoring date. K&N states "up to 99% engine protection efficiency" without citing ISO 5011 or SAE J726 methodology, placing this figure in unverified territory. The filter ships dry with no oiling requirement and has no MAF sensor oil risk. AutoZone (SKU 1712873) independently confirms fitment across the listed Toyota, Lexus, and Mitsubishi applications, and community purchasers report correct drop-in installation on the Highlander, RAV4, ES350, and Camry with no bypass or seal issues noted. Dimensions are 8.656 in x 9.563 in x 2.188 in per AutoZone specs.
The right pick for a Toyota, Lexus, or Mitsubishi owner on the covered application list who wants a longer-interval OEM-style replacement without paying for a washable filter. Skip if you need a filter with ISO 5011-certified efficiency figures or cross-reference confirmation from two independent databases: only AutoZone has catalogued this part number so far, holding fitment accuracy at the one-database ceiling. Buyers expecting the performance of K&N's KN-series washable filters should note the KNA- prefix identifies the disposable Advantage Plus line; this filter is single-use and requires no cleaning kit.
Passive replacement component with no chemical exposure during installation or removal; no SDS applies. The environment score of 5.0 reflects the extended-interval disposable profile: the 18,000-mile interval reduces replacement cycles compared to a standard 12K paper filter (lifecycle 6.0, shedding 5.0), but the composite cellulose/cardboard construction has limited municipal recyclability (recyclability 4.0). No cleaning products are associated with this filter.
Not sure this filter fits your car? Find the engine air filter for your vehicle in the CarCareTruth air-filter finder and pick your year, make, and model to see the filters that fit it, ranked by our independent score and cross-checked against multiple catalog fitment sources.
No. The KNA- prefix designates K&N's Advantage Plus disposable line: single-use cellulose blend media that is discarded at the replacement interval, not cleaned and reused. The traditional K&N washable performance filter carries a KN- prefix (e.g., 33-2438, 33-2129) and uses oiled cotton gauze. The KNA-2443 requires no oiling, no cleaning kit, and has no MAF sensor oil concern.
K&N states an 18,000-mile replacement interval under normal highway driving, approximately 1.5 years at average driving distances. This is a manufacturer claim; no long-term community reviews documenting a completed 18,000-mile interval have been found as of June 2026 (the product was introduced in late 2024). Check your filter at each oil change if you drive in dusty conditions.
The KNA-2443 covers a broad Toyota, Lexus, and Mitsubishi application list spanning roughly 2010-2026, including the Highlander (2014-2026), RAV4 (2019-2025), Camry (2012-2024), ES350 (2013-2025), RX350 (2010-2026), NX300 (2018-2021), Sienna (2011-2020), Avalon (2013-2022), and Mitsubishi L200/Triton (2015-2025). Always confirm your specific year, make, model, and engine variant before purchasing.
No. The KNA-2443 is a single-use disposable filter. AutoZone confirms Reusable: No in its fitment database. Do not attempt to clean or re-oil it; replace at the 18,000-mile interval or when visually dirty.
The Amazon listing for K&N Advantage Plus Air Filter KNA-2443 carries a California Prop 65 warning. California requires this warning on a very wide range of manufactured goods — including rubber, vinyl, plastic, and metal automotive parts — whenever trace exposure to any of roughly 900 listed substances (commonly phthalates or heavy metals) is possible, regardless of whether the specific product poses a meaningful health risk. As a passive accessory, K&N Advantage Plus Air Filter KNA-2443 has no Safety Data Sheet, so there's no chemistry breakdown to translate beyond that.
Marketing copy from K&N, via Amazon. Not editorial.
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