Other
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 > Other
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 8409.91.92.90
Marine Spark-Ignition Piston Engine Cylinder Head
A cast aluminum cylinder head designed specifically for marine spark-ignition internal combustion piston engines used in propulsion systems. It houses the valves, spark plugs, and combustion chamber for high-performance boating applications. Classified under 8409.91.92.90 as a part suitable solely for marine propulsion engines of heading 8408.
Rotary Marine Engine Rotor Housing
Precision-machined housing for the rotor in Wankel-type rotary spark-ignition engines adapted for marine outboard propulsion. Features water-cooled design for saltwater durability. Falls under 8409.91.92.90 as a principal part for marine rotary propulsion engines of heading 8408.
Marine Outboard Engine Crankshaft Assembly
Forged stainless steel crankshaft with integrated counterweights for high-RPM marine spark-ignition piston engines in outboard motors. Engineered for vertical shaft orientation and saltwater corrosion resistance. Classified in 8409.91.92.90 for exclusive marine propulsion use.
Spark-Ignition Marine Piston and Ring Set
Hypereutectic aluminum pistons with chrome-faced piston rings optimized for marine spark-ignition engines in inboard propulsion systems. Designed for high compression ratios and water-cooled operation. Under 8409.91.92.90 as parts principally for marine heading 8408 engines.
Marine Propulsion Engine Camshaft
Billet steel camshaft with lobes profiled for marine spark-ignition V6 engines used in sterndrive propulsion. Features roller follower design for reduced friction in continuous duty cycles. HTS 8409.91.92.90 classification for marine-specific spark-ignition engine parts.
Water-Cooled Marine Engine Exhaust Manifold
Cast iron exhaust manifold with integrated water jackets for spark-ignition marine propulsion engines, preventing overheating in inboard applications. Designed to mix cooling water with exhaust gases. Classified under 8409.91.92.90 as principal marine engine part.
Marine Spark-Ignition Engine Connecting Rod
Forged I-beam connecting rods with marine-grade bushings for high-output spark-ignition V8 propulsion engines. Balanced for propeller load characteristics. 8409.91.92.90 as part solely for marine heading 8408 engines.
Sterndrive Engine Oil Pump Assembly
Gerotor oil pump assembly engineered for marine spark-ignition sterndrive propulsion engines, providing high-volume lubrication under continuous high-RPM operation. Features corrosion-resistant internals. Classified 8409.91.92.90 for marine exclusive use.
Marine Rotary Engine Apex Seals
Carbon composite apex seals for marine Wankel rotary spark-ignition propulsion engines, providing gas-tight sealing in saltwater environments. Precision-ground for minimal apex wear. HTS 8409.91.92.90 as specialized marine rotary parts.
Inboard Marine Engine Timing Chain Kit
Heavy-duty duplex timing chain with marine hydraulic tensioners for spark-ignition inboard propulsion engines. Designed for extended service intervals in continuous operation. 8409.91.92.90 marine propulsion classification.