{ "summary": "In the United States tariff, line 8421.32.00.00 covers 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. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 8421.32 in heading 84.21 (chapter 84).", "updatedAt": "2026-10-09", "facts": [ { "label": "Tariff line", "value": "8421.32.00.00", "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false" }, { "label": "Covers", "value": "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", "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false" }, { "label": "Duty (MFN)", "value": "Free", "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false" }, { "label": "Additional duties", "value": "None recorded", "source": null }, { "label": "Restrictions", "value": "None recorded", "source": null }, { "label": "Tariff", "value": "United States", "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false", "url": "https://border.bot/countries/united-states" }, { "label": "HS subheading", "value": "8421.32", "source": null, "url": "https://border.bot/hs-codes/842132" } ], "faq": [ { "question": "What does tariff line 8421.32.00.00 cover in the United States tariff?", "answer": "In the United States tariff, line 8421.32.00.00 covers 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." }, { "question": "What is the general (MFN) duty on 8421.32.00.00 in the United States?", "answer": "Goods under this line enter free of general (MFN) duty." } ], "sections": [ { "id": "covers", "title": "What this line covers", "text": [ "In the United States tariff, line 8421.32.00.00 covers 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.", "Its legal text is “Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines”, read under “Filtering or purifying machinery and apparatus for gases”." ] }, { "id": "structure", "title": "How it is structured", "text": [ "It falls under HS subheading 8421.32 in heading 84.21 (chapter 84). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff." ] }, { "id": "duty", "title": "Duty", "text": [ "Goods under this line enter free of general (MFN) duty." ] }, { "id": "other-countries", "title": "In other countries", "text": [ "No other national tariff on border.bot has live lines under 8421.32 yet." ] }, { "id": "sources", "title": "Sources and updates", "text": [ "The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.", "The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.", "The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.", "This page was last updated on 9 October 2026.", "Guidance from published tariff data, not a binding ruling. 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