8708.91 - Radiators and parts thereof:

Heading 8708.91 specifically classifies radiators designed for use in motor vehicles of headings 8701 through 8705, along with their individual parts. These are essential components of the engine's cooling system, responsible for dissipating heat generated during operation. This includes complete radiator assemblies, as well as individual elements such as fins, tanks, and cores, provided they are intended for incorporation into a motor vehicle radiator.

Distinguishing 8708.91 from its siblings is crucial for accurate classification. Unlike 8708.92, which covers exhaust systems, or 8708.93, which deals with clutches, this heading is strictly focused on the thermal regulation components of an engine. Similarly, it differs from 8708.94 (steering components) and 8708.95 (airbags). While 8708.99 encompasses a broad range of other vehicle parts, 8708.91 provides a specific classification for the distinct function and construction of radiators.

The subcategories within 8708.91 serve to differentiate between complete radiator units and the individual components that make them up. This distinction allows for precise tariff application based on whether the item is a fully assembled radiator or a mere part intended for the manufacture or repair of a radiator. Understanding these subdivisions helps customs officers and traders correctly identify the imported or exported goods.