8408.20.20.00 - To be installed in vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or heading 8702, 8703 or 8704

This HTS classification, 8408.20.20.00, specifically covers compression-ignition internal combustion piston engines, commonly known as diesel or semi-diesel engines, that are designed for installation in particular types of vehicles. The key defining characteristic for this category is the intended end-use: these engines are manufactured for propulsion of vehicles falling under subheadings 8701.21, 8701.22, 8701.23, 8701.24, or 8701.29 (which relate to special purpose tractors), or headings 8702 (motor vehicles for the transport of 10 or more persons), 8703 (motor cars and other motor vehicles principally designed for the transport of persons, including station wagons and racing automobiles), or 8704 (motor vehicles for the transport of goods).

Distinction from its sibling category, 8408.20.10, is crucial. While both fall under engines for propulsion of vehicles of chapter 87, 8408.20.10 is exclusively for engines intended for tractors suitable for agricultural use. In contrast, 8408.20.20.00 encompasses engines for a broader range of vehicles, including those specified for special purpose tractors, public transport, passenger cars, and goods transport vehicles. The sibling category 8408.20.90.00 serves as a residual for other engines of this type not falling into the more specific classifications.

As 8408.20.20.00 represents a leaf node within the HTS structure, there are no further subcategories. Therefore, classification under this code depends solely on the engine being a compression-ignition type and its intended installation in the specified vehicle categories. Examples of engines classified here would include diesel engines for trucks, buses, larger passenger vehicles, and specific types of heavy-duty or specialized tractors not exclusively designated for agricultural purposes.