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HSChapter 84
U.S. imports of outboard engines for marine propulsion (HS 840721) totaled $103.9M in July 2026, traded with 16 countries.
Importers of Outboard Engines for Marine Propulsion paid $8.2M in duties in July 2026 — an effective duty rate of 8.5% on $96.4M in dutiable value, based on actual customs collections rather than the published tariff schedule. Outboard Engines for Marine Propulsion imports of $103.9M in July 2026 ran 47% above the year-to-date monthly average of $70.5M.
Last updated: July 2026 dataOutboard marine engines — self-contained spark-ignition units that clamp to a vessel's transom — are classified under heading 840721, with US tariff lines distinguishing engines below 22.38 kW (8407210040) from higher-powered units (8407210080). Japan dominates US imports under this heading, reflecting the global market position of major Japanese outboard manufacturers, with China and Thailand also significant sources. Engines subject to Section 301 tariffs from China require careful duty planning, and EPA emissions certification is a prerequisite for entry of new outboard engines into US commerce.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
760 shipments/mo
Yes. New outboard engines must comply with EPA marine engine emissions standards under the Clean Air Act. Importers must ensure the engine model holds a valid EPA certificate of conformity; non-compliant engines may be refused entry or require export at the importer's expense.
Outboard engines imported from China may be subject to Section 301 tariffs. Importers should confirm the applicable Section 301 list and any exclusion orders in effect at the time of entry, as these measures have been subject to periodic review and modification.
Subheading 2 of 8 in heading 8407
Subheading 840721 · $103.9M of $1.1B
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8407210080 | Spk-Ign Rec/Rot Int Com Pst Eng,Marn Otbrd,NESOI | $96.9M | 7.67% | 91.93% | $7.4M |
| 8407210040 | Spkign Rec/Rot Int Com Pst Eng,Marn,Lt 22.38kw | $7.0M | 10.75% | 104.99% | $751K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8407210000 | Outboard Engines for Marine Propulsion | $43.9M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$103.9MYoY · Pro
Exports
$43.9MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Japan and China together supply 98% of it.
customs district
destination
entry
rate provision · imports
9.8% enters free of duty; the effective duty rate is 7.87%.