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8547.10.40.00/Autolite NGK4123 Ceramic Spark Insulator/Japan

Autolite NGK4123 Ceramic Spark Insulator from Japan

Autolite NGK4123 heavy-duty ceramic insulator for extended-reach spark plugs in natural gas-fueled drilling rig engines. Features double-fired glaze for superior gas seal integrity. Classifies precisely under HTS 8547.10.40.00 for stationary internal combustion NG spark plug production.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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Import Tips

• Confirm 'stationary' engine definition excludes mobile equipment; include dielectric test reports; verify no hazardous material content declarations needed