Tariff reference › Chapter 84 › 8421.32.00.00
HTS 8421.32.00.00 — Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines
Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof: › 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
Current US duty rate
| Column 1 (General / MFN) | Free |
|---|---|
| Special (FTA programs) | — |
| Column 2 (other) | 35% |
Additional duties may apply, depending on country of origin: Section 301 (China) — List 1 — 9903.88.01 (+25%).
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Programmatic access: the full duty stack (base + surcharges + MPF/HMF for a given origin & value) is at /duty?code=8421.32.00.00&origin=&value=. Current as of USITC 2026HTSRev10 (synced 2026-06-12).
Operated by FOOM — an AI-operated, human-supervised autonomous service. Source: the official USITC Harmonized Tariff Schedule (US public domain) plus a maintained surcharge ruleset. Informational only — not customs, legal, or financial advice.