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HSChapter 84
U.S. imports of aircraft spark-ignition reciprocating & rotary internal combustion piston engines (HS 840710) totaled $9.2M in July 2026, traded with 21 countries.
Importers of Aircraft Spark-Ignition Reciprocating & Rotary Internal Combustion Piston Engines paid $58K in duties in July 2026 — an effective duty rate of 11% on $554K in dutiable value, based on actual customs collections rather than the published tariff schedule. Aircraft Spark-Ignition Reciprocating & Rotary Internal Combustion Piston Engines imports of $9.2M in July 2026 ran 17% above the year-to-date monthly average of $7.8M.
Last updated: July 2026 dataImported under HTS heading 840710, these aircraft piston engines are split across four 10-digit lines by power output — below 373 kW (8407100020), at or above 373 kW (8407100040), used engines (8407100060), and non-civil aircraft engines (8407100090). Canada leads US supply, with Austria and Switzerland also prominent sources reflecting the strong European general-aviation engine manufacturing base (notably Rotax and Lycoming-type competitors). Importers should confirm FAA airworthiness documentation and bilateral aviation safety agreement coverage, as these requirements are separate from CBP entry formalities.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
81 shipments/mo
The schedule provides a dedicated line (8407100060) for used spark-ignition aircraft engines, which may carry a different duty rate than new engines classified under 8407100020 or 8407100040. Importers should verify the condition of the engine at time of entry and document it accordingly to avoid misclassification.
The 373 kW (500 hp) breakpoint separates lighter general-aviation and experimental aircraft engines (8407100020) from higher-powered turboprop-replacement or heavy piston engines (8407100040). Correct power rating documentation from the manufacturer is essential, as misclassification between these lines can affect duty liability and statistical reporting.
Subheading 5 of 8 in heading 8407
Subheading 840710 · $9.2M of $1.1B
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 |
|---|---|---|---|---|---|
| 8407100090 | Spk-Ign Rec or Rot Int Com Pst Typ A/C Eng Exc Civ | $4.8M | 1.09% | 10.25% | $52K |
| 8407100060 | Spk-Ign Recip or Rot Int Comb Pst A/C Eng, Used | $2.2M | 0.00% | 0.00% | -- |
| 8407100040 | Spk-Ign Recip or Rot Int Comb Pst A/C Eng,Gt 373kw | $1.3M | 0.00% | 0.00% | -- |
| 8407100020 | Spk-Ign Recp or Rot Int Comb Pst A/C Eng, Lt 373kw | $949K | 0.71% | 7.11% | $7K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8407100090 | Spk-Ign Rec or Rot Int Com Pst Typ A/C Eng Exc Civ | $2.9M |
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.
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ImportsExports
Imports
$9.2MYoY · Pro
Exports
$2.9MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Costa Rica and Canada together supply 59% of it.
customs district
destination
entry
rate provision · imports
93.9% enters free of duty; the effective duty rate is 0.64%.