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HS Heading 8409 : Parts suitable for use solely or principally with the engines of heading 8407 or 8408

HEADING DEFINITION & DISAMBIGUATION

HS Heading 8409 encompasses parts suitable for use solely or principally with the engines of heading 8407 or 8408. It classifies 3 6-digit WCO subheadings within Chapter 84 under the Harmonized System [USITC HTS 2026].

Chapter

Ch 84

Heading

8409

Subheadings

3 HS6

Status

Verified 2026

Subheadings Under Heading 8409

HS Code	WCO 6-Digit Subheading Description	Chapter	Operational Package
8409.10	For aircraft engines	84	View 8409.10 Package →
8409.91	Other, Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines)	84	View 8409.91 Package →
8409.99	Parts suitable for use solely or principally with the engines of heading 8407 or 8408, Other, Other	84	View 8409.99 Package →

DISAMBIGUATION & CLASSIFICATION GUIDE

How to Select the Correct Subheading Under Heading 8409

Commercial shipments must be declared under the exact 6-digit WCO subheading that matches physical, chemical, or processing characteristics. Review the subheading descriptions above and verify against binding CBP CROSS rulings prior to entry filing.

Official Primary Sources & Authority References

USITC HTS Heading 8409 ↗

United States International Trade Commission official Harmonized Tariff Schedule.

CBP CROSS Rulings ↗

CBP e-Rulings database for Heading 8409 precedent rulings.

WCO Nomenclature ↗

World Customs Organization Harmonized System 2022 nomenclature standard.

U.S. Census Foreign Trade ↗

U.S. Census Bureau HTS-to-NAICS concordance and Schedule B export database.

Heading 8409 Frequently Asked Questions (FAQ)

What commercial articles are grouped under HS Heading 8409?

HS Heading 8409 covers Parts suitable for use solely or principally with the engines of heading 8407 or 8408, grouping 3 6-digit WCO subheadings.

How are 6-digit subheadings structured under Heading 8409?

Subheadings under Heading 8409 range from 8409.11 to 8409.90, classifying goods by processing state, origin, or material composition.

What is the representative US import duty rate for Heading 8409?

US MFN general duty rates for Heading 8409 commodities range from Duty-Free up to representative ad valorem percentages under the 2026 US HTS.

Are Section 301 tariffs applicable to goods under Heading 8409?

Section 301 additional tariffs depend on the specific 8-digit or 10-digit US HTS code and country of origin (e.g. China Lists 1–4A).

What PGA message set flags apply to Heading 8409?

Partner Government Agency flags (FDA, USDA APHIS, EPA) apply depending on the specific commodity sub-classification.

How do I distinguish between subheadings under Heading 8409?

Review WCO subheading terms and candidate descriptions. For example, unroasted vs. roasted or decaffeinated vs. non-decaffeinated.

Can goods under Heading 8409 enter duty-free under USMCA?

Yes. Goods originating in USMCA territories (US, Mexico, Canada) enter duty-free under SPI code P with a valid Certificate of Origin.

What is the Section 321 de minimis limit for Heading 8409?

Eligible import shipments valued at $800 USD or less imported by one person on one day enter duty-free under 19 U.S.C. 1321.

What documents are required for formal customs entry of Heading 8409?

Commercial Invoice, Packing List, Bill of Lading, and CBP Form 7501 are mandatory for entries exceeding $2,500 USD.

How can an importer get a binding CBP classification ruling for Heading 8409?

Importers may apply for a binding ruling via CBP National Commodity Specialist Division under 19 CFR Part 177.