K&N 33-2385 High-Flow Washable Engine Air Filter

The 33-2385 is a 4-layer oiled cotton gauze engine air filter built for the factory air box on 2009-2026 F-150 trucks, Expeditions, Navigators, and related platforms. K&N cites 99% filtration efficiency via ISO 5011 methodology across the product line; no independent third-party test specifically for this SKU has been published. The aluminum wire frame sandwiches the cotton gauze layers with a synthetic foam/EPDM sealing gasket. The manufacturer rates the cleaning interval at 75,000 miles; community accounts document cleaning at 40,000 miles (finding meaningful organic debris accumulation and recommending service at around 37,000 miles rather than waiting for the full 75,000-mile interval). Multiple long-term owners confirm sustained performance across cleaning cycles. MAF sensor oil migration is a documented F-150 EcoBoost community concern at the category level, though no MAF sensor complaints appear among owners of this specific ASIN. Follow K&N's re-oiling instructions carefully during maintenance.

Right pick for a 2009-2026 F-150 owner (or Expedition, Navigator, or Raptor owner) who wants to permanently eliminate recurring engine air filter replacement costs over a 100,000-mile ownership period and is comfortable with periodic cleaning maintenance every 37,000-40,000 miles. The filter's cost-of-ownership advantage over repeated disposable purchases is confirmed across multiple long-term community accounts. Skip if your F-150 EcoBoost has a documented MAF sensor sensitivity history or if you prefer to avoid the re-oiling maintenance step · a dry synthetic reusable or a premium OEM-spec disposable is the lower-friction alternative. Super Duty owners: the 33-2385 fits only 2008-2016 F-250/F-350/F-450/F-550; the 2017+ Super Duty platform uses a different air box requiring a different K&N part number.

Passive replacement component · no chemical exposure pathway during installation or removal; no SDS applies. The environment score of 7 (out of 10) reflects the washable reusable design: this filter eliminates 4-8 disposable filter replacement cycles over a typical 100,000-mile vehicle ownership period, with an aluminum wire frame that is recyclable as scrap and natural cotton gauze media, though no K&N take-back program is currently documented. Filter cleaning and re-oiling with the K&N Recharger kit involves a solvent cleaner and petroleum-based oil · review that product's safety data separately for PPE guidance during maintenance.

An engine air filter only does its job if it actually fits your car, and the same vehicle often takes a different part year to year. Before you buy, find the engine air filter for your vehicle in the CarCareTruth air-filter finder · pick your year, make, and model and we'll show the filters that fit it, ranked by our independent score and cross-checked against multiple catalog fitment sources.