HS Code for Large Diesel Generators
The HS Code for large diesel generators is 850213. The MFN duty rate for importing to the US is 2.5%.
| HS Code (6-digit) | 850213 |
|---|---|
| US Duty Rate (MFN) | 2.5% |
| EU Duty Rate (MFN) | 2.7% |
| Chapter | 85 |
| Heading | 8502 |
| Last Updated | 2026-05 |
Description
Electric generating sets, diesel, output exceeding 375 kVA
HS Code 850213 covers large diesel electric generating sets with output exceeding 375 kVA, subject to a 2.5% US MFN duty rate.
Frequently Asked Questions
Does the material composition of the engine block or alternator housing affect the classification of a large diesel generator under HTS 8502.13?
No, for this specific heading, the material (e.g., cast iron, aluminum, steel) of the generator's components does not change the classification. HTS 8502.13 is defined solely by the prime mover being a diesel engine and the electrical output exceeding 375 kVA, making it a material-neutral provision.
Why are large diesel generators over 375 kVA considered high-risk for customs inspections?
Due to their high value, complexity, and dual-use potential, these generators are flagged for rigorous verification of engine serial numbers, country of origin markings, and power output specifications to prevent misclassification and ensure compliance with anti-diversion controls. Inspectors will also closely examine the diesel engine component for proper emissions certifications and any applicable anti-dumping or countervailing duty requirements.
What are the primary additional costs and fees beyond the purchase price when importing a large diesel generator (over 375 kVA) into the United States?
Beyond the purchase price, you will typically pay a 2.5% Most Favored Nation (MFN) tariff rate for HTS 850213, plus a 25% additional duty if the engine is of Chinese origin under Section 301. Significant costs also include freight, insurance, and harbor maintenance fees, as these generators are heavy and often shipped via roll-on/roll-off (Ro-Ro) vessels.
Material Variants in Large Diesel Generators
Large diesel generators are classified under 850213 regardless of their housing or frame material (e.g., steel skid, aluminum enclosure). The classification is based on the prime mover being a diesel engine and the output exceeding 75 kVA. However, if the generator set is permanently installed in or on a vehicle or vessel (like a mobile drilling rig), it may be classifiable elsewhere, such as in Chapter 87 or 89. The electrical generation components (alternator) remain the core determinant of the 8502 heading.
Alternative & Confused Classifications
Large diesel generators can be confused with gas turbine generating sets under heading 8502.40, which are classified by their prime mover. For smaller, portable generators (often under 75 kVA), check heading 8502.11 or 8502.12. Furthermore, generator sets designed for permanent installation in vehicles, ships, or aircraft fall outside heading 8502 and are classified with their respective vehicle (e.g., 8708 or 8408). Always verify the power output and primary design to ensure correct classification.
Related HS Codes
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