Analysis
HTS 8421.31.00 covers intake air filters for internal combustion engines under heading 8421 (centrifuges, including centrifugal dryers; filtering or purifying machinery and…).
Rates on the nearby lines range from duty-free to 2.5%. The costliest confusion would be with 8421.99.01 (parts: other) at duty-free, a difference of 2.5 points on the customs value.
The general duty rate is 2.5% of the customs value, which is in the middle of the rates in chapter 84 (68th percentile of 823 lines with an ad valorem rate). On a shipment valued at $10,000 that is $250 in duty before any Chapter 99 additions or preference claims.
The column 2 rate, for countries without normal trade relations, is 35%, 14.0 times the general rate.
Goods that qualify under GSP, the Australia FTA, the Automotive Products Trade Act, the Bahrain FTA, the civil aircraft agreement, and 14 others can enter duty-free instead of paying 2.5%. It is also eligible under GSP, the developing-country programme, which Congress has to renew; check whether GSP is in force on the entry date.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 8421.11.00 | Centrifuges, including centrifugal dryers: cream separators | Free |
| 8421.12.00 | Centrifuges, including centrifugal dryers: clothes-dryers | Free |
| 8421.19.00 | Centrifuges, including centrifugal dryers: other | 1.3% |
| 8421.21.00 | For filtering or purifying water | Free |
| 8421.22.00 | For filtering or purifying beverages other than water | Free |
| 8421.23.00 | Oil or fuel filters for internal combustion engines | 2.5% |
| 8421.29.00 | Filtering or purifying machinery and apparatus for liquids: other | Free |
| 8421.32.00 | Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines | Free |
| 8421.39.01 | Filtering or purifying machinery and apparatus for gases: other | Free |
| 8421.91.20 | Drying chambers for the clothes-dryers of subheading 8421.12 and other parts of clothes-dryers incorporating drying chambers | Free |
| 8421.91.40 | Furniture designed to receive the clothes-dryers of subheading 8421.12 | Free |
| 8421.91.60 | Of centrifuges, including centrifugal dryers: other | Free |
| 8421.99.01 | Parts: other | Free |