8409.91.99.10 - Connecting rods

This HTS category, 8409.91.99.10, specifically covers connecting rods intended for use with spark-ignition internal combustion piston engines (including rotary engines) that fall under headings 8407 or 8408. Connecting rods are critical components that transmit the reciprocating motion of the piston to the crankshaft, converting linear motion into rotational motion. These parts are essential for the operation of a wide variety of gasoline-powered engines found in automobiles, motorcycles, small aircraft, and many other applications.

This specific subheading is distinguished from its sibling, 8409.91.99.90, which represents "Other" connecting rods. While both subcategories fall under "Other" parts suitable for spark-ignition engines, the .10 designation signifies a particular type or material characteristic of connecting rods that warrants separate classification, though the specific defining criteria for this distinction are not explicitly detailed beyond "Other" in the provided hierarchy.

As this is a leaf node in the HTS database, there are no further subcategories. Therefore, the classification of a connecting rod under 8409.91.99.10 relies on its definitive suitability for spark-ignition internal combustion piston engines and the exclusion from any more specific preceding subheadings within the 8409.91 category. Importers and exporters should ensure that the connecting rods in question meet these criteria to ensure accurate customs declaration.