K&N 33-5139 High-Flow Original Lifetime Engine Air Filter

The 33-5139 is a 4-layer oiled cotton gauze panel filter that drops into the factory air box of the Civic Type R's 2.0L turbo engine (K20C1), replacing Honda OEM part 1722066VA00. K&N publishes a company-wide ISO 5011 filtration-testing methodology, but its own 33-5139 spec page does not list a SKU-specific efficiency percentage, so filtration performance for this exact filter rests on the brand's general methodology rather than a published number for this SKU. K&N states a 75,000-mile cleaning interval under normal highway driving; the FL5 Type R platform only launched for model year 2023, 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 Type R was found to confirm or contradict that claim.

Right pick for a 2023-2026 Civic Type R owner with the 2.0L turbo engine (K20C1) 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, confirmed on both Honda's own genuine-parts dealer catalog and NAPA, plus K&N's own per-year application data, makes fitment risk low for the Type R engine specifically. Skip if your Civic is a base LX or Sport with the 2.0L naturally aspirated engine, or has the 1.5L turbo engine (EX-L, Sport Touring, or Si trims): all use a different airbox and a different Honda OEM part than the 1722066VA00 this filter replaces, so the 33-5139 does not fit any of them. Also skip if you would rather wait for independent dyno data to accumulate on this newer trim before committing to a performance filter.

Passive replacement component; no chemical exposure pathway during installation or removal, and no SDS applies. The product's Amazon listing carries a posted California Proposition 65 warning (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 FL5 Civic Type R 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.