Cast Iron Marine Engine Cylinder Block from Japan
A rough cast-iron cylinder block machined only to remove casting fins and gates, designed specifically for marine propulsion engines under heading 8408. It serves as the core housing for pistons and crankshaft in diesel marine engines. Classified under 8409.99.10.60 due to its cast-iron construction, limited machining, and exclusive use in marine propulsion.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify the part is machined only for fin/gate removal and location; advanced machining shifts to 8409.99.91
• Provide engine model specs and marine propulsion certification to confirm heading 8408 compatibility
• Include foundry test reports proving cast-iron composition to avoid reclassification as steel parts