Many tariff lines under this heading originating from China are subject to Section 301 measures. The specific list and any applicable exclusions are maintained by the Office of the US Trade Representative; importers should confirm the current status of the relevant 10-digit HTS line before entry.

No. Inner tubes under 4013 are inflatable rubber chambers that sit inside a tire casing. Tubeless valves, rim strips, and rim tape are accessories that serve a different function and are generally classified elsewhere in the rubber articles or base-metal chapters depending on their material and construction. A binding ruling is advisable for combination kits.