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Code 8421 99 · Heading 8421

Other parts for machines and apparatus that filter or purify liquids or gases

This code covers parts for machines and apparatus used to filter or purify liquids or gases. It does not cover parts for centrifuges, which have their own category.

For example

  • A replacement filter housing for a liquid-filtration machine
  • A replacement casing part for a gas-purification apparatus
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See the official tariff text

Official tariff text

Parts of machinery and apparatus for filtering or purifying liquids or gases, n.e.s.

This is the catch-all under 8421: it covers what the sibling codes below do not.

Within the parts and equipment group for filtering or purifying liquids or gases, this is where parts belong when no other sibling category names them, including parts that are not centrifuge parts.

Full 8-digit codes

Pick the description that best matches your product.

2 codes below this one

Compare the sibling codes

Classification decides the rate here: from 0.0% to 2.7%.

Export to Norway

What Norwegian customs charges when goods like these are imported into Norway.

  • 84.21.9900

    Other

    Ordinary duty
    Duty free
    Goods of EU origin
    Duty free You need documentation of EU origin to use this rate.

Norwegian tariff data version 1.5/1.2, last checked Aug. 3, 2026.

Contains data from Norwegian Customs (data.toll.no), licensed under CC BY 4.0, adapted for display.

Export to the United Kingdom

What UK customs charges when goods like these are imported into the UK.

  • All 4 UK lines under this code

    They all have the same duty rates shown here.

    Ordinary duty
    Duty free
    Goods of EU origin
    Duty free You need documentation of EU preferential origin to use this rate.

These rates apply in Great Britain. Different rules may apply for goods entering Northern Ireland.

UK tariff data version v4.0.1576, last checked Aug. 3, 2026.

Contains public sector information licensed under the Open Government Licence v3.0.

Source: UK Department for Business and Trade (data.api.trade.gov.uk).

Check the neighbouring codes

The codes just before and after this one, in case a nearby group fits better.

See all 12 codes at this level
Previous code 8421 91

Parts of centrifuges, incl. centrifugal dryers, n.e.s.

you are here 8421 99

Parts of machinery and apparatus for filtering or purifying liquids o…

Duty rates shown here are estimates, read from official EU / Danish, Norwegian and UK tariff data for orientation only. Confirm the current rate with SKAT, TARIC, Norwegian Customs or the UK Online Trade Tariff before you file. The rate you pay can also depend on the country of origin. These are base customs duties only: import VAT, excise duties, anti-dumping duties and safeguard or quota measures are not included.