K&N 33-5045 High-Flow Original Lifetime Engine Air Filter

The 33-5045 is a 4-layer oiled cotton gauze panel filter that drops into the factory air box of the 2022-2026 Honda Civic's 2.0L naturally aspirated engine (K20C2), replacing Honda OEM part 172205BAA00. K&N's own spec page states up to 99% filter efficiency for this exact SKU and cites a company-wide ISO 5011 testing methodology, but no independent third-party lab or publication corroboration was found for this specific SKU. K&N states a 75,000-mile cleaning interval under normal highway driving; the platform only launched for model year 2022, so no owner has yet reached that first interval at typical mileage, and single-filter multi-cycle cleaning data does not exist yet. The manufacturer markets increased horsepower and acceleration; no independent dyno test isolating this drop-in filter on a Civic 2.0L was found to confirm or contradict that claim.

Right pick for a 2022-2026 Civic LX or Sport owner with the 2.0L naturally aspirated engine (K20C2) who wants to stop buying disposable filters over a long ownership horizon and is comfortable with an occasional cleaning and re-oiling step. The Honda OEM cross-reference and two independent parts-database confirmations, plus K&N's own per-year application data, make fitment risk low for the 2.0L engine specifically. Skip if your Civic has the 1.5L turbo engine (EX-L, Sport Touring, or Si trims) or the 2.0L turbo Type R: both use a different airbox and a different Honda OEM part than the 172205BAA00 this filter replaces, so the 33-5045 does not fit either one. Also skip if you would rather wait for independent dyno and multi-cycle cleaning data to accumulate on this newer platform before committing to a performance filter.

Passive replacement component; no chemical exposure pathway during installation or removal, and no SDS applies. The product carries a California Proposition 65 warning on K&N's own product page (the standard automotive-component label), reflected as a small accessory health adjustment rather than a use-phase exposure hazard. The environment score of 6 reflects the washable reusable lifecycle credited for its structural waste reduction and recyclability advantage over a disposable filter, held back from the top of the reusable range because the 11th-gen Civic 2.0L platform is too new for community-confirmed multi-cycle mileage data. Filter cleaning and re-oiling with a K&N Recharger kit involves a solvent cleaner and petroleum-based oil; review that product's safety data separately for PPE guidance.

An engine air filter only does its job if it actually fits your engine, and the 11th-gen Civic alone spans three different airboxes across its trims. 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.