What does 8409.91 cover?

Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines):. This is a heading-level category with several subordinate codes — open one to see its full duty breakdown.

Where does this data come from?

Codes and MFN base rates come from the full USITC HTS 2026 Rev.11 export. Section 301/232/122 surcharge mappings are approximated pending code-level review. Every rate carries a source_url and effective_from, so you can trace it back to the controlling notice.

8409.91 — Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines):

Home/HTS/ Ch. 84/ 8409/8409.91

8409.91 · Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines):

This is a category heading rather than a rate line — pick one of the codes below to see its full duty stack.

Subordinate codes (5)

Code	Description
8409.91.10	Cast-iron parts, not advanced beyond cleaning, and machined only for the removal of fins, gates, sprues and risers or to permit location in finishing machinery
8409.91.30.00	Aluminum cylinder heads
8409.91.50	Other
8409.91.92	For marine propulsion engines
8409.91.99	Other

Frequently asked

What does 8409.91 cover?: Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines):. This is a heading-level category with several subordinate codes — open one to see its full duty breakdown.
Where does this data come from?: Codes and MFN base rates come from the full USITC HTS 2026 Rev.11 export. Section 301/232/122 surcharge mappings are approximated pending code-level review. Every rate carries a source_url and effective_from, so you can trace it back to the controlling notice.