Harmonized Tariff Schedule of the U.S. › Chapter 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof
8421.31.00.00Tariff line
Classification path
Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof
8421
Filtering or purifying machinery and apparatus for gases
Intake air filters for internal combustion engines
8421.31.00.00
Rates of duty
General rate (Column 1)2.5%
SpecialFree (A, AU, B, BH, C, CL, CO, D, E, IL, JO, KR, MA, OM, P, PA, PE, S, SG)
Column 235%
UnitNo.
Free (A, AU, B, BH, C, CL, CO, D, E, IL, JO, KR, MA, OM, P, PA, PE, S, SG)
Printed page 2769
Measure flags
for origin CN, entry date 2026-10-26 · base rate 2.5%
- Section 301 forced-labor tariff (12.5%)9903.05.31Applies+12.5%China: Column 1 rate + 12.5% additional
- China 301 List 3 (9903.88.03)9903.88.03Applies+25%8-digit subheading 8421.31.00 is on L3
Confirmed total 40% · max 40%Full duty breakdown →