K&N 33-5083 High-Flow Washable Engine Air Filter

The 33-5083 is a 4-layer oiled cotton gauze panel filter that drops into the factory air box of the 2019-present T1XX GM full-size trucks, replacing GM OEM part numbers 84121217 and 84121219, the same element the ACDelco A3244C covers. K&N states a 75,000-mile cleaning interval under normal highway driving; because this is a newer platform part, single-filter multi-cycle mileage data is still accumulating in owner reports. Filtration efficiency is cited at up to 99% using ISO 5011 methodology, but that figure is manufacturer-published and no independent third-party test for this SKU was found. K&N also markets increased airflow and horsepower; no independent dyno data for the drop-in was found, and owner accounts on power and mileage are mixed.

Right pick for a 2019-present Silverado 1500 or Sierra 1500 owner who wants to stop buying disposable filters over a high-mileage ownership horizon and is comfortable with a periodic cleaning and re-oiling step every 75,000 miles. The GM OEM cross and K&N application list make fitment risk low for the T1XX trucks. Skip if your Silverado or Sierra is a 2019 or older K2XX or GMT-platform truck; that older air box takes the K&N 33-2129, not this filter. Also skip if your engine has a documented history of MAF sensor sensitivity to filter oil; a dry synthetic reusable or an OEM-spec disposable is the lower-risk alternative for that application.

Passive replacement component; no chemical exposure pathway during installation or removal, and no SDS applies. The product carries a 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 7 reflects the washable reusable lifecycle: this filter eliminates four to eight disposable replacement cycles over a typical ownership period, with a 75,000-mile cleaning interval and a reusable cotton-and-mesh design that generates far less per-mile waste than paper. 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 truck, and the T1XX and the older K2XX platforms take different parts. 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.