HS Code for Engine Air Filters
The HS Code for engine air filters is 842131. The MFN duty rate for importing to the US is 2.4%.
| HS Code (6-digit) | 842131 |
|---|---|
| US Duty Rate (MFN) | 2.4% |
| EU Duty Rate (MFN) | 1.7% |
| Chapter | 84 |
| Heading | 8421 |
| Last Updated | 2026-05 |
Description
Intake air filters for internal combustion engines
HS Code 8421.31 covers intake air filters for internal combustion engines with a US MFN duty rate of 2.4%.
Frequently Asked Questions
How does the filter media material (e.g., paper, foam, cotton gauze) affect the classification of engine air filters under HTS 8421.31?
The specific filter media material is generally not a determining factor for classification under HTS 8421.31, as this heading broadly covers intake air filters for internal combustion engines. The primary classification is based on the product's function for filtering intake air, regardless of whether the filtering element is made of pleated paper, polyurethane foam, oiled cotton, or another material. However, if the filter is part of a larger assembly or has special features, it may be classified elsewhere.
For HTS 842131 engine air filters, what specific customs inspection risks exist regarding country of origin and anti-dumping duties?
Engine air filters under HTS 842131 from specific countries, such as China, may be subject to active anti-dumping duty orders. Customs will scrutinize the country of origin on commercial documents and may require a manufacturer's affidavit to verify the true origin. Failure to provide sufficient proof can result in cargo holds, audits, and the retroactive application of high anti-dumping duty rates.
What additional duties or fees are typically assessed on imports of engine air filters (HTS 842131) into the United States?
Engine air filters under HTS 842131 are generally subject to a Most Favored Nation (MFN) duty rate of 2.4% ad valorem into the U.S. Additionally, they may be subject to a Merchandise Processing Fee (MPF) and, if applicable, Section 301 tariffs imposed on goods of Chinese origin, which can add a significant 2.4% duty on top of the base rate.
Material Variants in Engine Air Filter Classification
Classification under 842131 is generally for air filters made of paper or non-woven textile materials, which constitute the vast majority of automotive and machinery applications. Filters using activated carbon or other chemicals for odor removal remain here as their primary function is still particulate filtration. However, air filters constructed primarily of metal mesh or ceramic materials, designed for permanent cleaning and reuse, are often classified elsewhere, such as in HTS 8421.99. A key distinction is whether the filter element is designed to be disposable (8421.31) or is a durable, cleanable part of a larger assembly.
Similar and Confused HTS Codes
Engine air filters are distinct from air filters for passenger vehicle cabins, which are classified under HTS 8421.39.00. Filters for the intake systems of internal combustion engines for other machinery (e.g., tractors, construction equipment) also fall under 8421.31.00. However, air filters designed for HVAC systems in buildings or industrial processes are classified elsewhere, such as in heading 8421.39. A key distinction is the filter's application: 8421.31 is specifically for filters cleaning air for combustion in an engine, not for general air purification or cabin ventilation.
Related HS Codes
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