HS Code for Engine air filter

Engine air filters are classified under HS code 8421.31. This classification falls under Chapter 84, which covers nuclear reactors, boilers, machinery, and mechanical appliances. Heading 8421 is specifically designated for centrifuges and filtering or purifying machinery and apparatus for liquids or gases. Subheading 8421.31 is a specific provision for intake air filters for internal combustion engines. The classification is based on the application of the filter: it must be designed to remove particulate matter from the air before it enters the combustion chamber of an engine. This applies regardless of the material of the filtering element (paper, foam, or textile) or the type of engine (spark-ignition or compression-ignition), as long as it is part of the engine's intake system.

Products Included

• Pleated paper air filters for automotive engines
• Foam air filter elements for motorcycles
• Heavy-duty air filters for truck engines
• Oil-bath air cleaners for industrial engines
• High-performance cotton gauze intake filters

Common Misclassification

Engine air filters are often confused with HS code 8421.39, which is the residual category for other gas filtering or purifying apparatus. However, 8421.39 is intended for cabin air filters (which filter air for passengers, not the engine) or industrial dust extractors. Another common mistake is classifying filters based on their material, such as 4812 (filter blocks of paper pulp) or 5911 (textile products for technical uses). Per Note 2(e) to Section XVI, parts of machines are classified in their respective headings; since 8421 specifically mentions filters, it takes precedence over general material headings.

FAQ

What is the HS code for engine air filter?

The specific HS code for intake air filters for internal combustion engines is 8421.31.

Is the HS code the same for cabin air filters?

No, cabin air filters are classified under HS code 8421.39 because they are not intake filters for the engine itself.