9902.16.19 - Fuel shutoff solenoids designed for compression-ignition diesel engines with cylinder capacity ranging between 2,000 cc and 20,000 cc, such solenoids measuring 5 cm or more but not over 800 cm in length, 3 cm but not over 500 cm in width and 3 cm but not over 200 cm in height (provided for in subheading 8505.90.75)

This HTS category, 9902.16.19, covers specific fuel shutoff solenoids designed for heavy-duty compression-ignition diesel engines. The defining characteristics include the engine's cylinder capacity, which must range from 2,000 cc to 20,000 cc, and the physical dimensions of the solenoid itself. These solenoids are further specified by their length (5 cm to 800 cm), width (3 cm to 500 cm), and height (3 cm to 200 cm). The "provided for in subheading 8505.90.75" notation indicates that while these solenoids fall under a temporary or special provision within Chapter 99, their underlying classification is for electrical apparatus for the protection of electrical circuits, specifically magnetic coils.

Distinguishing this category from its siblings at the root level is crucial. Unlike the primary commodity chapters (01-98) which classify goods based on their fundamental nature and origin (e.g., live animals, agricultural products, machinery), Chapter 99 deals with temporary legislation, trade agreement modifications, and specific import restrictions. Therefore, 9902.16.19 is not a broad classification of solenoids in general, but rather a very specific provision for a particular type of solenoid subject to special import rules or considerations, as designated by its presence within this chapter.

As this is a leaf node within the HTS database, it does not possess subcategories. The detailed specifications for engine type, cylinder capacity, and physical dimensions provided in the description serve as the definitive criteria for classifying an item under 9902.16.19. Any item meeting all these precise requirements is considered to fall within this provision, while variations in engine type, capacity, or the solenoid's dimensions would necessitate classification under different HTS codes, potentially within Chapter 85 if not subject to other special provisions.