8409.99.99.10 - Connecting rods

This HTS category, 8409.99.99.10, specifically covers connecting rods that are suitable for use solely or principally with internal combustion piston engines of heading 8407 (spark ignition) or 8408 (compression ignition). Connecting rods are critical engine components that transmit reciprocating motion from the piston to the crankshaft, converting linear movement into rotational force. This classification applies to the connecting rods themselves, irrespective of the specific engine type they are designed for, as long as they meet the sole-or-principal-use criterion with engines of the specified headings.

This particular subcategory, "Connecting rods," distinguishes itself from its sibling, 8409.99.99.90, which is designated for "Other" parts of engines of heading 8407 or 8408 not specifically enumerated elsewhere within the 8409.99.99.XX range. Therefore, if a part is identifiable as a connecting rod and fits the usage criteria, it will be classified here, rather than under the more general "Other" category.

As this is a leaf node within the HTS structure, there are no further subcategories branching from 8409.99.99.10. Classification at this level is definitive for connecting rods intended for engines covered by headings 8407 and 8408. Importers should ensure that the connecting rods in question are indeed designed and primarily used with these types of engines to ensure accurate classification.