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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for non-marine boat engines or general use
Parts for spark-ignition engines not specifically for marine propulsion fall under the general 'other' category.
If sold as replacement valve assemblies rather than engine-specific
Valve mechanisms classified separately if not integral to marine engine design.
If for diesel marine engines
Marine parts for compression-ignition engines (heading 8408) use different subheading.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Provide engine model compatibility documentation to prove sole use with marine propulsion engines
• Include material certifications (e.g
• corrosion-resistant alloys) required for marine environments
• Avoid classifying as general engine parts (8409.91.91); specify marine propulsion application
Related Products under HTS 8409.91.92.90
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.