HS 842191 Parts

Quick Answer: Parts for centrifuges and filtering or purifying machinery imported under HS 842191 enter the UK at 0.00%, the EU at 1.70% ad valorem, and the US with rates varying from Free to 25% ad valorem. This classification specifically covers components and accessories for machinery used in separating liquids from solids or gases, or for filtering and purifying liquids or gases. Importers should verify the specific subheadings within the US tariff schedule for precise duty rates. CustomTariffs aggregates this data, highlighting the importance of precise classification for accurate duty assessment across different trade blocs.

What Are the Import Duty Rates?

🇬🇧 United Kingdom

Code MFN Preferential Unit
8421910000 0.00 %

🇪🇺 European Union (TARIC)

Code MFN Preferential Unit
8421910000 1.70 %

🇺🇸 United States (HTSUS)

Code MFN Preferential Unit
842191
8421914000 Free ["No."]
8421912000 Free ["No."]
8421916000 Free ["kg"]

Duty rates sourced from the USITC (US International Trade Commission) Harmonized Tariff Schedule (HTS) (accessed 2/22/2026), EU TARIC – DG TAXUD (Directorate-General for Taxation and Customs Union) (accessed 2/22/2026), and UK Trade Tariff – HMRC (His Majesty's Revenue and Customs) (accessed 2/22/2026).

Data compiled and presented by HSRates.

How Has Trade Volume Developed?

Trade Volume 2023

US$248.3M
ImportsExports

How to Classify This HS Code?

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What products does HS 842191 cover?

This subheading covers parts and accessories specifically designed for use with machinery of heading 8421, which pertains to centrifuges, filtering, and purifying machinery for liquids or gases. According to the World Customs Organization (WCO) Harmonized System Nomenclature, this includes components like filter elements, casings, impellers, and seals that are integral to the functioning of centrifuges, oil filters, water purifiers, and air filters, as detailed in the Explanatory Notes for heading 8421.

What falls outside HS 842191?

The following products are excluded from HS 842191: complete machines of heading 8421, such as a fully assembled water filter or a functioning centrifuge. Also excluded are general-purpose parts that are not specifically designed for machinery of heading 8421, such as common screws, nuts, or bolts, unless they are exclusively intended for such machinery. For example, a universal pump impeller not specific to a 8421 machine would be classified elsewhere.

What are common classification mistakes for HS 842191?

A common error is classifying a part that is also a finished article in its own right under HS 842191. For instance, a self-contained, portable water purification unit, even if it contains filter elements, would likely be classified as a finished machine under a more specific subheading of 8421, rather than just its parts. This often relates to General Interpretative Rule (GIR) 1 and 6, which prioritize the most specific heading and subheading.

How should importers classify products under HS 842191?

The correct procedure for classifying products under HS 842191 involves first identifying the specific type of machinery (from heading 8421) for which the part is intended. Importers and customs brokers must then consult the official tariff schedule, such as the USITC Harmonized Tariff Schedule (HTS) or the EU's TARIC database, to confirm that the part is not specifically enumerated elsewhere and is indeed a component of 8421 machinery.

How is the duty calculated for products under HS 842191?

A specific replacement filter cartridge for an industrial oil filtration system, declared at a customs value of $500 USD, would attract a US duty of $35.00. This is calculated using the MFN rate of 7.0% ad valorem published in the USITC Harmonized Tariff Schedule (HTS) for a relevant part of 8421. The calculation is $500 USD × 0.07 = $35.00.

Which trade agreements reduce duties for HS 842191?

Several free trade agreements may reduce the applicable duty rate for HS 842191, including the United States-Mexico-Canada Agreement (USMCA), which can result in a duty rate of Free for qualifying originating goods from Canada and Mexico. Additionally, the Generalized System of Preferences (GSP) may offer reduced or Free duties for eligible goods from certain developing countries. To claim these preferences, a self-certified origin statement for USMCA or a GSP Form A may be required, depending on the specific agreement and jurisdiction.

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FAQ

What are the typical import duty rates for HS code 842191?

Import duty rates for HS code 842191, which covers 'Parts' for centrifuges, filter, and purifier machinery, vary significantly by country. For example, under the US Harmonized Tariff Schedule (USHTS), the Most Favored Nation (MFN) rate is often 1.70% ad valorem. However, preferential rates under trade agreements can be lower, with some sources indicating 'Free' duty. It is crucial to consult the specific tariff schedule of the importing country for the applicable rate. For instance, the UK Trade Tariff lists a duty rate of Free for goods originating from countries with which the UK has a Free Trade Agreement.

How is the import duty for HS 842191 calculated, and can you provide an example?

The import duty for HS code 842191 is typically calculated on an ad valorem basis, meaning it is a percentage of the declared customs value of the imported parts. For example, if a shipment of centrifuge parts is valued at $10,000 USD and the applicable MFN duty rate is 1.70%, the duty payable would be $10,000 USD * 0.0170 = $170 USD. Some duties may also include specific duties based on weight or quantity, but ad valorem is most common for parts. Always verify the basis of duty calculation in the importing country's tariff.

What documentation is typically required for importing parts classified under HS 842191?

When importing parts under HS code 842191, standard customs documentation is required. This includes a commercial invoice detailing the description, quantity, unit price, and total value of the parts; a packing list specifying the contents of each package; and a bill of lading or air waybill as proof of shipment. Depending on the importing country and the nature of the parts, a certificate of origin may be necessary to claim preferential duty rates under trade agreements. Importers should also be prepared to provide technical specifications or drawings if customs authorities require further clarification on the classification.

Are there specific classification criteria that distinguish parts for centrifuges, filters, and purifiers under HS 842191?

HS code 842191 covers 'Parts' for machinery of heading 8421, which includes centrifuges, and machinery for filtering or purifying liquids or gases. The classification criteria hinge on whether the item is specifically designed and exclusively or principally used as a component part of such machinery. This means the part must not be a general-purpose item that could be used in multiple types of machinery. For example, a specialized filter membrane for a water purifier would be classified here, whereas a standard bolt or screw might be classified under a more general heading unless it's specifically designed for the machinery.

Which common trade agreements might offer preferential duty rates for HS code 842191, and how can importers verify eligibility?

Several trade agreements can provide preferential duty rates for parts classified under HS 842191. For instance, goods originating from countries party to the United States-Mexico-Canada Agreement (USMCA) may benefit from reduced or zero duties when imported into the US, Canada, or Mexico. Similarly, goods from countries with preferential trade agreements with the European Union (e.g., Comprehensive Economic and Trade Agreement - CETA with Canada) or the UK (e.g., Free Trade Agreement with Japan) can also receive reduced tariffs. To verify eligibility, importers must obtain a valid Certificate of Origin from the exporter, confirming that the parts meet the rules of origin stipulated in the relevant trade agreement. This document is essential for claiming preferential treatment at customs.