Product classification
HS code for Industrial diesel engine: 8408.90
Engines, compression-ignition internal combustion piston engines (diesel or semi-diesel engines), of a kind used for other than marine propulsion or the vehicles of chapter 87.
Classification of industrial diesel engine under HS 8408.90
Industrial diesel engines are classified under HS code 8408.90. This classification falls under Chapter 84, which covers nuclear reactors, boilers, machinery, and mechanical appliances. Heading 8408 specifically identifies compression-ignition internal combustion piston engines, which include both diesel and semi-diesel engines. The sub-heading 8408.90 is a residual category for engines that are not used for marine propulsion (8408.10) or for the propulsion of vehicles classified in Chapter 87 (8408.20). Therefore, engines intended for stationary power generation, construction equipment, irrigation pumps, and other industrial machinery are grouped here. The classification is based on the engine's mechanical design—relying on the heat of compression to ignite fuel—and its intended application. It is important to note that this code applies to the engine as a standalone unit; if the engine is imported already mounted on a generator or a vehicle chassis, the classification of the entire assembly would change.
- Covers
- Diesel engines for stationary electrical generators
- Compression-ignition engines for excavators and bulldozers
- Diesel engines for industrial water pumps
- Semi-diesel engines for factory power units
- Replacement diesel engines for non-road mobile machinery
- Also under 8408.90
- Cummins QSB Series Engines
- Caterpillar C Series Engines
- John Deere PowerTech Engines
- Perkins 400 Series Engines
- Yanmar TNV Series Engines
Codes often confused with 8408.90
Common mistake. Industrial diesel engines are often misclassified under 8408.20, which is strictly for engines used in road vehicles like trucks or buses. Another common error is confusing them with spark-ignition engines (gasoline engines), which are classified under heading 8407. Additionally, if a diesel engine is imported as part of an electric generating set, it should be classified under heading 8502. Importers also frequently confuse these with marine engines (8408.10), which must have specific design features for maritime environments to qualify for that code.
Top exporters and importers of HS 840890 (the code used for industrial diesel engine), 2025
In 2025, the largest exporter of HS 840890 (the code used for industrial diesel engine) in UN Comtrade data was the United Kingdom, with 16% of world exports; the largest importer in UN Comtrade data was the United States, with 20% 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 840890, not only industrial diesel engine.
Top exporters 2025 · share of world exports
- 1 United Kingdom $2.4B 16% of world exports
- 2 China $2.2B 14% of world exports
- 3 Japan $2.2B 14% of world exports
World total: $15.6B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $3.0B 20% of world imports
- 2 China $2.1B 14% of world imports
- 3 Germany $678M 4.6% of world imports
World total: $14.8B 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 codes for industrial diesel engine
Brazil splits HS 8408.90 into 2 NCM codes. Pick the one that matches your product:
- 8408.90.10Stationary diesel engines over 497.5 kW
- 8408.90.90Other diesel engines
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about industrial diesel engine
What is the HS code for Industrial diesel engine?
The HS code for Industrial diesel engine is 840890 (Engines; compression-ignition internal combustion piston engines (diesel or semi-diesel engines), of a kind used for other than marine propulsion or the vehicles of chapter 87). The HS code for industrial diesel engines (non-marine, non-road vehicle) is 8408.90.
How do I classify Industrial diesel engine for customs?
Industrial diesel engine is classified under HS code 840890 — Engines; compression-ignition internal combustion piston engines (diesel or semi-diesel engines), of a kind used for other than marine propulsion or the vehicles of chapter 87. This is a 6-digit subheading level code.
Does this code include the radiator and cooling system?
Yes, if the cooling system is presented with the engine as a functional unit, it is generally classified together under 8408.90.
Which countries are the top exporters of industrial diesel engine (HS 840890)?
In 2025, the top exporters of HS 840890 (the code used for industrial diesel engine) in UN Comtrade data were the United Kingdom ($2.4B, 16% of world exports), China ($2.2B) and Japan ($2.2B). World exports came to about $15.6B, 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 industrial diesel engine (HS 840890)?
In 2025, the top importers of HS 840890 (the code used for industrial diesel engine) in UN Comtrade data were the United States ($3.0B, 20% of world imports), China ($2.1B) and Germany ($678M). World imports came to about $14.8B, 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 Industrial diesel engine the same in all countries?
The base HS code 840890 for Industrial diesel engine 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 industrial diesel engine in Brazil?
Brazil splits HS 840890 into 2 NCM codes, so the right one for industrial diesel engine depends on the product's details: 8408.90.10 (Stationary diesel engines over 497.5 kW), 8408.90.90 (Other diesel engines).