WIX Filters 49350 Engine Air Filter

The WIX 49350 is a disposable pleated-paper filter using phenolic-resin-treated cellulose media with pleat stabilization beads — the same construction Toyota specifies as OEM. WIX is manufactured by MANN+HUMMEL, a Tier 1 OEM supplier, which is why the filtration efficiency claim (≥99% at ISO 5011 medium test dust) carries more credibility than a typical aftermarket marketing assertion; MANN+HUMMEL publishes this data in the context of genuine OEM supply relationships. No independent consumer-lab test for this specific retail SKU exists in the reviewed evidence base. The OEM cross-reference to Toyota 17801-0W010 is confirmed across RockAuto, AutoZone, and NAPA; multiple community reviews spanning 2010 through 2023 4Runner model years confirm drop-in fit and a solid seal in the factory air box. Replacement interval follows Toyota's OEM recommendation: 15,000–30,000 miles depending on duty cycle.

Right pick for a 5th gen Toyota 4Runner, Lexus GX460, or FJ Cruiser owner who wants an OEM-quality replacement at below-dealer pricing — the filter's manufacturer (MANN+HUMMEL) supplies the OEM production line for the same platform. Skip if your 4Runner is a 6th generation (2025+) — the newly redesigned platform uses a different engine and air box; verify the part number against your specific model year. Also skip if you're switching from a K&N washable filter and prioritizing long-term cost savings over replacement cycles — a washable reusable filter eliminates the disposable replacement cadence entirely, though at a higher upfront cost.

Passive replacement component — no chemical exposure pathway during installation or removal; no SDS applies. Environment score of 4, reflecting a standard disposable filter lifecycle: a single-use paper-and-cardboard unit replaced on the OEM 15,000–30,000 mile service interval, with composite construction (cellulose media, cardboard frame, polyurethane foam seal) that goes to landfill at replacement with limited municipal recyclability.