Product classification
HS code for Aircraft piston engines: 8407.10
Engines, for aircraft, spark-ignition reciprocating or rotary internal combustion piston engines.
Classification of aircraft piston engines under HS 8407.10
Aircraft piston engines are classified under HS code 840710 due to their specific design and application for aircraft propulsion. This heading explicitly covers spark-ignition reciprocating or rotary internal combustion piston engines that are "for aircraft." The classification is precise, distinguishing these specialized engines from other types of internal combustion engines used in vehicles, marine vessels, or stationary applications. The unique requirements for power-to-weight ratio, reliability, and operational safety in aviation necessitate distinct engineering and manufacturing processes, which are reflected in this dedicated HS code. This ensures that engines built to aeronautical standards are correctly identified for customs purposes.
- Covers
- Reciprocating piston engines for light aircraft
- Rotary piston engines specifically designed for aircraft
- Engine blocks for aircraft piston engines
- Cylinder heads for aircraft piston engines
- Crankshafts and connecting rods identifiable as solely for aircraft piston engines
- Also under 8407.10
- Lycoming IO-360
- Continental O-200
- Rotax 912
- Jabiru 3300
- Pratt & Whitney R-2800 (for vintage aircraft restoration)
Codes often confused with 8407.10
Common mistake. Aircraft piston engines are sometimes misclassified under broader categories such as 840790 for "Other spark-ignition internal combustion reciprocating piston engines" or even 8408 for "Compression-ignition internal combustion piston engines (diesel engines)." However, 840790 lacks the crucial "for aircraft" specificity, encompassing a wide range of general-purpose spark-ignition engines. Similarly, 8408 is for diesel engines, which operate on a different combustion principle. The defining characteristic for 840710 is the explicit mention of "for aircraft," which mandates that only engines engineered and certified for aviation use are classified here, preventing confusion with engines intended for ground vehicles or other industrial applications.
Top exporters and importers of HS 840710 (the code used for aircraft piston engines), 2025
In 2025, the largest exporter of HS 840710 (the code used for aircraft piston engines) in UN Comtrade data was Singapore, with 27% of world exports; the largest importer in UN Comtrade data was Saudi Arabia, with 29% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 840710, not only aircraft piston engines.
Top exporters 2025 · share of world exports
- 1 Singapore $879M 27% of world exports
- 2 Saudi Arabia $667M 21% of world exports
- 3 Kuwait $214M 6.6% of world exports
World total: $3.2B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Saudi Arabia $907M 29% of world imports
- 2 Thailand $394M 13% of world imports
- 3 Singapore $224M 7.2% of world imports
World total: $3.1B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for aircraft piston engines
Brazil classifies aircraft piston engines under NCM 8407.10.00: HS 8407.10 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about aircraft piston engines
What is the HS code for Aircraft piston engines?
The HS code for Aircraft piston engines is 840710 (Engines; for aircraft, spark-ignition reciprocating or rotary internal combustion piston engines). The Harmonized System (HS) code for aircraft piston engines is 840710. This code specifically designates spark-ignition reciprocating or rotary internal combustion piston engines that are designed and manufactured for use in aircraft. It differentiates them from other types of internal combustion engines.
How do I classify Aircraft piston engines for customs?
Aircraft piston engines is classified under HS code 840710 — Engines; for aircraft, spark-ignition reciprocating or rotary internal combustion piston engines. This is a 6-digit subheading level code.
Are parts of aircraft piston engines classified under 840710?
Generally, parts of aircraft piston engines are classified under 840710 if they are identifiable as solely or principally for use with these engines. This includes major components such as engine blocks, cylinder heads, and crankshafts. However, general-purpose parts that could be used in various engines might be classified elsewhere, depending on their specific nature and material.
Which countries are the top exporters of aircraft piston engines (HS 840710)?
In 2025, the top exporters of HS 840710 (the code used for aircraft piston engines) in UN Comtrade data were Singapore ($879M, 27% of world exports), Saudi Arabia ($667M) and Kuwait ($214M). World exports came to about $3.2B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of aircraft piston engines (HS 840710)?
In 2025, the top importers of HS 840710 (the code used for aircraft piston engines) in UN Comtrade data were Saudi Arabia ($907M, 29% of world imports), Thailand ($394M) and Singapore ($224M). World imports came to about $3.1B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Aircraft piston engines the same in all countries?
The base HS code 840710 for Aircraft piston engines is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for aircraft piston engines in Brazil?
In Brazil, aircraft piston engines (HS 840710) is classified under NCM 8407.10.00.