9902.15.45 - Cast iron crankcases, suitable for use solely or principally with marine propulsion engines, each crankcase measuring more than 1.1 m in length (provided for in subheading 8409.99.92)

This HTS category, 9902.15.45, specifically covers cast iron crankcases that are designed for exclusive or primary use with marine propulsion engines. A key defining characteristic for classification under this provision is the physical dimension of the crankcase, which must measure more than 1.1 meters in length. This precise specification ensures that only larger, specialized crankcases are included here, distinguishing them from smaller or general-purpose engine components.

While the broader HTS system contains numerous chapters and headings related to machinery and engines, this particular provision falls under Chapter 99, which is reserved for temporary legislation and special classification provisions. This indicates that the goods classified here are subject to specific trade policies or restrictions that may differ from their primary classification under, for instance, heading 8409.99.92 as indicated in the description. The purpose of this temporary classification is to manage or monitor the importation of these specific marine engine components.

As a leaf node within the HTS database, this category does not have further subdivisions. Classification is definitive once the criteria of material (cast iron), intended use (solely or principally with marine propulsion engines), and physical dimension (over 1.1 meters in length) are met. This singular focus ensures accurate and consistent application of the temporary trade measures associated with this specific item.