For marine propulsion engines
Parts suitable for use solely or principally with the engines of heading 8407 or 8408: > Other: > Suitable for use solely or principally with spark-ignition internal combustion piston engines (including rotary engines): > Cast-iron parts, not advanced beyond cleaning, and machined only for the removal of fins, gates, sprues and risers or to permit location in finishing machinery > For marine propulsion engines
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 8409.91.10.60
Cast Iron Marine Piston Casting
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.
Marine Crankshaft Rough Casting
Cast iron crankshaft blank for spark-ignition outboard/inboard marine engines, with minimal machining only for gate removal and fixturing. Specifically engineered for high-RPM marine duty cycles, classified under 8409.91.10.60 as a cast-iron part principally for 8407/8408 marine engines.
Outboard Motor Cylinder Head Casting
Rough cast iron cylinder head for spark-ignition marine outboard engines, cleaned and machined solely for casting defect removal. Designed with marine-specific cooling passages, this part is suitable principally for 8408 marine propulsion engines per HTS 8409.91.10.60.
Inboard Engine Block Rough Casting
Cast iron engine block casting for spark-ignition inboard marine propulsion engines, with gates/risers removed and minimal location machining. Principal use with heading 8407/8408 engines justifies 8409.91.10.60 classification for marine-specific rough castings.
Sterndrive Mounting Bracket Casting
Rough cast iron bracket for mounting spark-ignition sterndrive marine propulsion systems, machined only for casting cleanup. Essential structural component principally used with 8408 marine engines, classified under HTS 8409.91.10.60 marine provisions.
Marine Exhaust Manifold Casting
Cast iron rough casting for spark-ignition marine engine exhaust manifolds, with sprues removed and water jacket passages roughed in. Water-cooled design specific to marine propulsion qualifies for HTS 8409.91.10.60 classification.
Propulsion Engine Flywheel Casting
Rough cast iron flywheel blank for high-torque marine spark-ignition propulsion engines, cleaned and center-bored only for finishing fixturing. Heavy-section design for marine propeller loads qualifies under 8409.91.10.60.
Cylinder Liner Rough Casting
Cast iron cylinder liner blanks for marine spark-ignition propulsion engines, machined only externally for finishing location. Chrome-compatible internal honing surface design specific to marine duty cycles.
Marine Camshaft Rough Casting
Rough cast iron camshaft casting for spark-ignition marine propulsion engines, with bearing journals roughed for finishing only. Marine-specific lobe profiles for propeller load characteristics.
Intake Manifold Rough Casting
Cast iron intake manifold casting for multi-cylinder marine spark-ignition engines, cleaned with runner locations machined. Wet-sump marine fuel mixture design specific to propulsion applications.