Ship Engine Piston Ring Set
Complete piston ring sets for large marine diesel engines, installed during foreign shipyard overhaul of a U.S. container ship before its return to U.S. ports. Qualifies under 9818.00.05.00 as critical spare parts for vessel operation documented per subchapter requirements.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If entered as general diesel engine parts
Piston rings without vessel-specific documentation default to Chapter 84 engine parts classification.
If for repairs made abroad without part installation before entry
Applies to vessels entering for repairs rather than pre-installed spare parts.
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
• Submit engine maintenance logs proving installation timing; ensure vessel qualifies under U.S. note 1 definitions; maintain supplier invoices from foreign purchase to avoid misclassification
Related Products under HTS 9818.00.05.00
Marine Propeller Shaft
A precision-engineered propeller shaft installed on a U.S.-flagged cargo vessel during foreign maintenance to replace a worn component before its first U.S. entry. This essential propulsion system part is classified under HTS 9818.00.05.00 as a spare part necessarily installed abroad on a qualifying vessel documented in U.S. note 1 to subchapter.
Anchor Chain Replacement Links
Heavy-duty forged steel anchor chain links installed to repair storm damage on a U.S. fishing vessel during foreign port maintenance before first U.S. return. Covered by 9818.00.05.00 for qualifying vessel spare parts necessarily installed abroad.
Marine Rudder Bearing Assembly
High-load capacity rudder bearings installed during drydock repairs of a U.S. bulk carrier in foreign shipyard before its first U.S. port call. This navigation-critical spare part qualifies under 9818.00.05.00 for pre-entry installation on qualifying vessels.
Cargo Pump Impeller Blades
Stainless steel impeller blades for chemical tanker cargo pumps, installed during foreign classification survey repairs before vessel's first U.S. entry. Classifiable under 9818.00.05.00 as necessary spare parts for qualifying U.S. vessels.
Bow Thruster Gearbox Seals
Specialized high-pressure seals for bow thruster gearbox, replaced during foreign refit of U.S. cruise ship before first U.S. port arrival. Qualifies under 9818.00.05.00 as essential maneuvering system spare parts installed pre-entry.
Generator Cooling Water Pump
Complete replacement cooling water pump for ship's emergency generator, installed during foreign maintenance before U.S. flagged ro-ro vessel's first U.S. entry. Covered by 9818.00.05.00 for critical electrical system spares.