U.S. imports of Outboard Engines for Marine Propulsion (HS 840721) totaled $76.5M in August 2026, imported from 17 countries.
Importers of Outboard Engines for Marine Propulsion paid $8.9M in duties in August 2026, an average duty rate of 11.72% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 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.
507 import shipments a month
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 · $76.5M of $1.0B
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8407210080 | Spk-Ign Rec/Rot Int Com Pst Eng, Marn Otbrd, NESOI | $69.6M | 11.92% | 97.90% | $8.3M |
| 8407210040 | Spkign Rec/Rot Int Com Pst Eng, Marn, Lt 22.38kw | $6.5M | 9.57% | 76.56% | $624K |
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 | $53.5M |
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.
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ImportsExports
Imports
$76.5MYoY · free account
Exports
$53.5MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $818.0M of Outboard Engines for Marine Propulsion and exported $536.7M.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Japan and China together supply 99% of it. China pays 33.3% duty; Canada 0.0%.
customs district
destination
entry
rate provision · imports
2.4% enters free of duty; duty collected equals 11.72% of imports for consumption.