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): > Other: > 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 8409.91.92
Marine Piston Engine Crankshaft
A forged steel crankshaft designed specifically for spark-ignition marine propulsion engines under heading 8407/8408. It converts the linear motion of pistons into rotational torque for propelling boats and ships. Classified under 8409.91.92 due to its principal use in marine outboard and inboard engines.
Outboard Motor Cylinder Head
Aluminum alloy cylinder head for spark-ignition marine outboard engines, featuring integrated cooling passages and valve seats. Critical for combustion chamber formation in marine propulsion systems. Falls under 8409.91.92 for exclusive use in marine heading 8407/8408 engines.
Marine Engine Connecting Rod
High-strength steel connecting rod for spark-ignition marine propulsion engines, with marine-grade bearings for saltwater environments. Links piston to crankshaft in marine outboard/inboard applications. 8409.91.92 classification reflects principal marine propulsion use.
Inboard Boat Engine Camshaft
Precision-ground camshaft for marine spark-ignition inboard engines, controlling valve timing for optimal marine performance. Features corrosion-resistant coatings for saltwater exposure. Specifically for 8407/8408 marine propulsion engines per 8409.91.92.
Sterndrive Engine Piston Assembly
Complete piston assembly with rings and wrist pin for marine sterndrive spark-ignition engines. Designed for high-RPM marine propulsion with enhanced cooling. 8409.91.92 due to sole use in marine heading 8407/8408 engines.
Marine Spark Plug Adapter
Brass adapter converting standard automotive spark plugs for marine spark-ignition propulsion engines. Provides waterproof sealing for marine environments. Classifies under 8409.91.92 as part principally for marine 8407/8408 engines.
Outboard Engine Flywheel
Heavy-duty cast iron flywheel with integral starter ring gear for marine spark-ignition outboard engines. Smooths power delivery and marine starter engagement. 8409.91.92 for principal marine propulsion engine use.
Inboard Marine Engine Oil Pump
Gear-type oil pump assembly for spark-ignition marine inboard engines, with marine-grade seals for lubrication in saltwater environments. 8409.91.92 classification for marine propulsion engine parts.
Jet Boat Impeller Shaft
Stainless steel propeller shaft specifically for spark-ignition marine jet boat propulsion engines. Connects engine to jet pump impeller for waterjet propulsion. 8409.91.92 due to marine propulsion engine specificity.
Marine Engine Timing Chain
Heavy-duty roller timing chain for marine spark-ignition propulsion engines, with corrosion-resistant plating. Synchronizes crankshaft and camshaft timing. Classified 8409.91.92 for marine 8407/8408 engine use.