8409.91Parts suitable for use solely or principally with the engines of…
HTS Code 8409.91 covers any article best defined as Machinery and Mechanical Appliances; Electrical Equipment; Parts Thereof; Sound Recorders and Reproducers, Television Image and Sound Recorders and Reproducers, and Parts and Accessories of Such ArticlesNuclear reactors, boilers, machinery and mechanical appliances; parts thereofParts suitable for use solely or principally with the engines of heading 8407 or 8408:Other:Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines): in the Harmonized Tariff Schedule — covering 5 sub-classifications.
Tariff updates
Recent US tariff actions that name 8409.91 or its heading.
- Dec 18, 2025 · PublishedUS cuts reciprocal tariff on Swiss and Liechtenstein goods to 15% all-in, exempts certain products
AD/CVD Cases
Antidumping or countervailing duty orders and investigations whose scope lists 8409.91 or a related code. They apply only to goods from the countries named, and only if the product fits the scope's description.
- Certain Large Vertical Shaft Engines Between 225cc and 999cc, and Parts ThereofFrom ChinaScope in the Federal Register
- Certain Vertical Shaft Engines Between 99cc and 225cc, and Parts ThereofFrom ChinaScope in the Federal Register
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If a new 10% tariff were added
Relevant HTS Notes
Official USITC notes that may affect classification under HTS 8409.91.
Related CROSS Rulings for HTS 8409.91
CBP classification rulings related to 8409.91. Open a ruling to read how Customs classified a similar product.
No rulings found
No CROSS classification rulings were found for HTS code "8409.91".
What does HTS code 8409.91 cover?
HTS code 8409.91 covers parts suitable for use solely or principally with the engines of… (Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines):), classified under Chapter 84 (Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof) in the US Harmonized Tariff Schedule. There are 5 more specific sub-classifications under this code.
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