EximDataX

HS Code 8421Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus for liquids or gases

12 six-digit codes · Heading 21 of 86 in Chapter 84 · World Customs Organization Harmonized System

HS code 8421 is the customs heading for centrifuges and for machines that filter or purify liquids and gases. Use this page to find the right code for a cream separator, a water filter, an engine filter or a catalytic converter.

Heading 8421 is finely cut: 12 six-digit codes, 842111 to 842199, all of them under “Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus for liquids or gases”. At that depth it is the exact wording of the code, not of the heading, that settles a classification. The heading is number 21 of 86 in Chapter 84, Machinery and mechanical appliances, boilers, nuclear reactors; parts thereof, which runs to 538 six-digit codes in all.

Six-digit codes under heading 8421

HS CodeImport–export description
842111Centrifuges; cream separators
842112Centrifuges; clothes-dryers
842119Centrifuges; n.e.c. in heading no. 8421, including centrifugal dryers (but not clothes-dryers)
842121Machinery; for filtering or purifying water
842122Machinery; for filtering or purifying beverages other than water
842123Machinery; filtering or purifying machinery, oil or petrol filters for internal combustion engines
842129Machinery; for filtering or purifying liquids, n.e.c. in item no. 8421.2
842131Machinery; intake air filters for internal combustion engines
842132Machinery; catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines
842139Machinery; for filtering or purifying gases, other than intake air filters, catalytic converters or particulate filters for internal combustion engines
842191Centrifuges; parts thereof, including parts for centrifugal dryers
842199Machinery; parts for filtering or purifying liquids or gases

What HS code 8421 covers

Heading 8421 groups machines that clean or separate things. Some do it by spinning, like centrifuges and centrifugal dryers. Others push a liquid or a gas through a filter or a purifier.

The heading also holds parts. A filter housing or a centrifuge bowl sold on its own can still belong here.

The codes work in four groups. Each group is a different kind of machine. The next section shows how to pick between them.

How to choose the right 8421 code

Start with one question: does the machine spin to separate, or does it filter? Then ask what it cleans: a liquid or a gas. Last, ask whether you are shipping the whole machine or only a part.

  • Centrifuges: 842111 is for cream separators. 842112 is for clothes-dryers. 842119 is for other centrifuges, including centrifugal dryers that are not clothes-dryers.
  • 842122 is for beverages other than water. 842129 is for other liquids.
  • 842139 is for other gas filtering machinery.
  • Parts: 842191 is for parts of centrifuges.

Common products: water, oil, air and exhaust filters

A water filter machine or water purifier goes under 842121. A machine that cleans beverages other than water, such as juice, goes under 842122.

An oil or petrol filter for a car or truck engine goes under 842123. An air filter that feeds clean air into an engine goes under 842131. A catalytic converter or a particulate filter on an exhaust goes under 842132.

Check the wording before you pick a code. A filter for an engine has its own code, and so does a filter for other equipment. Engine filters are named in the code text. A general filter for other liquids falls under 842129, and one for other gases under 842139.

National customs offices add more digits after these six. Those longer lines can differ by country, so confirm the local line before you file. The HS code classifier can help you narrow down your product.

Headings often confused with 8421

Some products look close to 8421 but sit elsewhere. Read the heading text first, then compare.

Pumps, compressors and fans that move air or gas are in heading 8414. Machinery that treats materials with heat is in heading 8419. Milking machines and dairy machinery are in heading 8434, so a cream separator used as dairy machinery needs a careful check against the 842111 wording.

Household washing machines, including ones that dry, are in heading 8450. The engines themselves are in headings 8407 and 8408. Only the filters that go on those engines belong in 8421.

HS code 8421 import and export data

Knowing the code is the first step. The next is seeing who trades under it.

EximDataX shows shipment-level import and export records from official customs sources. Coverage: 43 direct customs feeds plus 184 mirror-derived countries. Named buyers and named suppliers are available in 38 of the 43 direct markets. Most markets refresh weekly and some refresh daily.

You can search by HS code to see who imports and exports a product, and book a free demo.

Who ships under 8421?

EximDataX tracks the live import–export records filed under this heading and the 12 codes beneath it: named buyers, suppliers, quantities and values from official customs feeds.

See live data for 8421

Section XVI: Machinery, Electrical Equipment and Parts, chapters 84–85.

Straight answers

HS Code 8421: common questions

What is HS code 8421?

It is part of Chapter 84, the machinery chapter.

What is the HS code for a water filter machine?

Machinery for filtering or purifying water goes under 842121. Machines for beverages other than water go under 842122.

What is the HS code for oil or petrol filters for engines?

Oil or petrol filters for internal combustion engines go under 842123.

Which HS code covers catalytic converters?

Intake air filters for engines have their own code, 842131.

How can I see who imports or exports HS 8421 goods?

Look up the code in the import and export data pages on EximDataX. The data section above explains what the records show.

See what your buyers are buying.Then decide.

Everything we show you comes from official customs filings — records, not claims. 30 minutes. Your shipment. Your HS code. Real platform. If you don’t see something new about your market by the end of the call, we walk away. No follow-ups.

Free 3-day test account. No card on file. No funnel email sequence.