GM LS3 Aluminum Engine Block from Japan
Semi-finished 6.2L LS3 aluminum engine block casting for GM Gen IV small block V8 spark-ignition engines. Features priority main oiling and 4.065-inch bore provisions. 8409.91.99 as principal unfinished part for spark-ignition piston engines.
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%
Import Tips
• Bore spacing and main cap girder design diagrams establish LS-series specificity
• Machining allowance specifications distinguish from fully machined blocks (8483)
• Foundry pour card and alloy certification (319 aluminum) required for validation