Chapter 84 · Machinery and mechanical appliances; computers · Section 16

HS Code 8421.32

Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines

Heading 8421: Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof

US duty (general)
Free
US HTS lines
1
EU CN codes
1
UK commodity codes
3
Unit
No.

US HTS + UK Tariff v4.0.1596 · updated 2026-09-10 · sources

United States - HTS lines under 8421.32

Source: official Harmonized Tariff Schedule (USITC). "General" is the normal-trade-relations rate; "Special" lists preference programs; "Other" is the column-2 rate. Additional Section 232/301 duties may apply on top.

HTS codeDescriptionGeneralSpecialOtherUnit
8421.32.00 Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines Free - 35% No.

Estimate the US duty runs in your browser · no caps

Enter the customs value (and quantity, when a rate is per-unit) to estimate the general-rate duty per HTS line. Estimates exclude Section 232/301 surcharges, MPF/HMF and fees. Not a customs ruling.

European Union - CN codes under 8421.32

Source: EU Combined Nomenclature (Eurostat, © European Union, reused per Decision 2011/833/EU). Duty rates and measures live in TARIC; each code links to the official consultation.

CN codeDescription
8421 32 00 Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines EU duty (TARIC) →

United Kingdom - commodity codes under 8421.32

Source: UK Integrated Online Tariff (Open Government Licence v3.0). Declarable 10-digit codes go on the customs declaration; check the official page for the current duty and VAT measures.

Commodity codeDescription
8421 32 00 00 Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines UK duty & VAT →
8421 32 00 10 For use in civil aircraft UK duty & VAT →
8421 32 00 90 Other UK duty & VAT →
Not a customs ruling. Classification is determined by the importing country's customs authority and depends on the exact product. This page is reference information from official published schedules, not legal advice. For a binding decision, request a ruling (US: CBP CROSS · UK: HMRC ATaR · EU: BTI).

Other subheadings in 8421

8421.00 8421 Centrifuges, including centrifugal dryers; filtering or purifying machinery and appar 8421.11 Cream separators 8421.12 Clothes-dryers 8421.19 Other 8421.21 For filtering or purifying water 8421.22 For filtering or purifying beverages other than water 8421.23 Oil or fuel filters for internal combustion engines 8421.29 Other 8421.31 Intake air filters for internal combustion engines 8421.32 Catalytic converters or particulate filters, whether or not combined, for purifying or fil 8421.39 Other 8421.91 Of centrifuges, including centrifugal dryers 8421.99 Other

Sources: U.S. International Trade Commission, Harmonized Tariff Schedule (public domain) · EU Combined Nomenclature © European Union, Eurostat (Decision 2011/833/EU) · UK Integrated Online Tariff, contains public sector information licensed under the Open Government Licence v3.0. Data refreshed weekly. Details on About & Data Sources.