Engine Air Filter Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

EPAuto is the best-performing engine air filter brand in July 2026, moving 7,000 units across 5 ASINs for 43.8% of Top 10 volume. Motorcraft follows with 3,000 units (18.8%), ahead of K&N on 3,000 units (18.8%).

With 5 brands splitting the Top 10 and 81.3% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $14.31 to $21.56, which frames the price band a competing listing has to justify.

Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. On the growth side, B0735VYV6P leads positive momentum with ▲ 50.0% MoM growth on 600 units, with B0735VDLSW close behind at ▲ 50.0% MoM on 300 units.

The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.