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840729Chapter 84

HS code 840729: Marine Propulsion Engines

Covers:
Spark-ignition reciprocating or rotary internal combustion piston engines not listed under the other codes in this heading.
Not covered:
840710 (Aircraft engines); 840721 (Marine propulsion engines — Outboard motors); 840731 (Reciprocating piston engines of a kind used for…); and others.
Listed US duty:
0% (US general rate, HTS 2026)

Official description

Spark-ignition reciprocating or rotary internal combustion piston engines : Marine propulsion engines : Other

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Suggestions from the HS index, not a customs ruling

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What 840729 covers and what it doesn’t

Official text: Spark-ignition reciprocating or rotary internal combustion piston engines › Marine propulsion engines › Other.

This is the “other” line of heading 8407 (spark-ignition reciprocating or rotary internal combustion piston engines). It takes goods of that heading that no more specific subheading names. These go elsewhere:

  • 840710 Aircraft engines
  • 840721 Marine propulsion engines — Outboard motors
  • 840731 Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87 — Of a cylinder capacity not exceeding 50 cm³
  • 840732 Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87 — Of a cylinder capacity exceeding 50 cm³ but not exceeding 250 cm³
  • 840733 Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87 — Of a cylinder capacity exceeding 250 cm³ but not exceeding 1000 cm³
  • 840734 Reciprocating piston engines of a kind used for the propulsion of vehicles of Chapter 87 — Of a cylinder capacity exceeding 1000 cm³
  • 840790 Other engines

Nearby codes to check

  • Heading 8407 Spark-ignition reciprocating or rotary internal combustion piston engines: every subheading side by side.

US duty rate

0%

General (MFN) rate in the US Harmonized Tariff Schedule, 2026 edition. A range means the rate depends on the 8-digit US line your product falls under. Extra duties such as Section 301, Section 232 or anti-dumping orders can apply on top, depending on origin. Check the lines on hts.usitc.gov. Not legal advice.

Who imports under 840729

EximAgent lists companies with recorded shipments under this code, built from customs records, with who they buy from and how often. See importers of 840729 →

Common questions

What is HS code 840729?
Spark-ignition reciprocating or rotary internal combustion piston engines : Marine propulsion engines : Other
What duty rates apply to 840729?
Listed duty rates range from 0% across 1 country rate.

Browse all of Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof →

Go beyond the code

Classify a product and check the duty for your destination with the CLI, then keep researching in your own agent.

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