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HTS code reference›Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances›8409.91

HTS Code 8409.91

Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines):

Official tariff path

Parts 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):

Level: hs6General duty: Varies / see child provision

What does HTS 8409.91 cover?

This provision appears in the 2026 Harmonized Tariff Schedule of the United States under the following legal tariff hierarchy. A product must match the wording and applicable section or chapter notes before this code is used on an entry.

  1. 1Parts suitable for use solely or principally with the engines of heading 8407 or 8408:
  2. 2Other:
  3. 3Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines):

More specific provisions

8409.91.10Cast-iron parts, not advanced beyond cleaning, and machined only for the removal of fins, gates, sprues and risers or to permit location in finishing machinery8409.91.30.00Aluminum cylinder heads8409.91.50Other8409.91.92For marine propulsion engines8409.91.99Other

Nearby tariff provisions

8409.10.00For aircraft engines8409.99Other:
Official source and limitations

Based on USITC HTS 2026 Revision 12, published July 21, 2026. The general rate does not include every origin-specific program, Section 301 or 232 measure, antidumping or countervailing duty, quota, or other agency requirement.

Open this code in the official USITC search ↗