Cast Iron Marine Engine Cylinder Block
A rough cast-iron cylinder block machined only to remove casting fins and gates, designed specifically for marine propulsion engines under heading 8408. It serves as the core housing for pistons and crankshaft in diesel marine engines. Classified under 8409.99.10.60 due to its cast-iron construction, limited machining, and exclusive use in marine propulsion.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If machined beyond basic cleaning for finishing
Parts advanced beyond simple fin removal (e.g., bored cylinders) fall under other machined parts subheading.
If used in main crankshaft bearings
Crankshaft bearings, even cast-iron, classify under transmission shafts and cranks in Chapter 84.
If not principally for 8407/8408 engines
General cast-iron engine castings without specific marine propulsion use go to Chapter 73 articles of iron.
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Import Tips & Compliance
• Verify the part is machined only for fin/gate removal and location; advanced machining shifts to 8409.99.91
• Provide engine model specs and marine propulsion certification to confirm heading 8408 compatibility
• Include foundry test reports proving cast-iron composition to avoid reclassification as steel parts
Related Products under HTS 8409.99.10.60
Cast Iron Marine Piston Skirt Casting
Rough cast-iron piston skirt cleaned and lightly machined only at locating points for marine diesel propulsion engines of 8408. This component forms the lower sliding portion of large marine pistons. Fits 8409.99.10.60 as a cast-iron part not advanced beyond basic cleaning, solely for marine engines.
Marine Engine Cast Iron Bedplate Section
Heavy cast-iron bedplate segment for marine propulsion engines, machined solely to remove sprues and for assembly jig location. Forms the base frame supporting crankshaft in large ship diesel engines. Under 8409.99.10.60 for its rough state and marine-specific design.
Cast Iron Marine Engine Flywheel Casting
Rough cast-iron flywheel blank for marine propulsion engines, with gates and risers removed and minimal machining for balancing fixture location. Stores rotational energy in large diesel marine powerplants. 8409.99.10.60 applies to this unfinished cast-iron part exclusive to marine engines.
Marine Diesel Crankcase Casting
Cast-iron crankcase housing rough-machined only for fin removal, used in medium-speed marine propulsion diesel engines of heading 8408. Encloses crankshaft and main bearings. Qualifies for 8409.99.10.60 as cast-iron part limited to basic cleaning processes.
Cast Iron Marine Engine Water Jacket Casting
Rough cast-iron water jacket liner for cooling marine propulsion engines, cleaned of risers and lightly machined for fixture placement. Channels coolant around cylinders in ship engines. 8409.99.10.60 due to cast-iron material and minimal processing state.
Marine Propulsion Cast Iron Main Bearing Cap
Cast-iron main bearing cap casting for marine diesel engines, with sprues removed and machined only for location pins. Secures crankshaft main bearings in propulsion engines. Fits 8409.99.10.60 criteria perfectly as rough marine-specific part.