8409.91.10.60/Cast Iron Marine Piston Casting/Japan

Cast Iron Marine Piston Casting from Japan

Rough cast iron piston blank designed exclusively for spark-ignition marine propulsion engines, machined only to remove casting imperfections and permit finishing. Produced from high-strength cast iron alloy suitable for marine environments, this part falls under HTS 8409.91.10.60 due to its principal use with heading 8407/8408 engines and limited post-casting processing.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Verify engine compatibility documentation proving marine propulsion use; ensure casting composition meets USCG material standards; avoid over-machining which reclassifies to finished parts