Harmonized Tariff Schedule of the U.S. › Chapter 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof
8421.32.00.00Tariff 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
Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines
8421.32.00.00
Rates of duty
General rate (Column 1)Free
Special—
Column 235%
UnitNo.
Printed page 2769
Measure flags
for origin CN, entry date 2026-10-26 · base rate Free
- Section 301 forced-labor tariff (12.5%)9903.05.90ExemptexemptGoods entered under a 232 heading (AUTOS/MHDV) are exempt from the forced-labor 301 duty (note 52(f))
- China 301 List 1 (9903.88.01)9903.88.01Applies+25%8-digit subheading 8421.32.00 is on L1
- 232 passenger vehicles / light trucks & parts9903.94.05Applies+25%General (all other countries) | UK-only list of 10-digit statistical codes for 9903.94.32 (the UK subset of the (g) list)
- 232 medium/heavy-duty vehicles & parts9903.74.08Applies+25%General (all other countries) | Medium- and heavy-duty vehicle parts (Note 38(i) list)
Confirmed total 75% · max 75%Full duty breakdown →