Filtration
Best Engine Air Filters for Class 8 (2026)
Quick answer
Engine air filters on Class 8 trucks should be inspected at every PM and replaced when restriction indicators trip or at OEM interval. A clogged filter reduces fuel economy and increases turbo wear — stock one primary and one safety element where applicable.
Our top picks
Comparison
| P621725 - AIR CLEANER FILTER | W2084001 - REC IRC AIR FILTER | 243009 - AIR COMPRESSOR FILTER | |
|---|---|---|---|
| Live price | $301.20 | $40.61 | $22.69 |
| SKU | P621725 | W2084001 | 243009 |
| Filter type | Primary air cleaner | IRC / recirc element | Compressor intake |
| Best for | Engine intake PM | Cab/recirc service | Air system auxiliary |
| Typical interval | Per restriction gauge | Annual PM | As needed |
Our data
This guide uses live prices from the PartsNow catalog (~16,900 SKUs). Prices shown reflect current sell pricing with standard markup. We rank by fleet relevance, catalog availability, and common Class 8 replacement patterns — always confirm exact fitment with your part number before ordering.