Motorcraft SP-527NG Ceramic Core

Motorcraft SP-527NG ceramic core for spark plugs in natural gas standby generators and industrial engines. High-purity porcelain formulation resists carbon tracking in rich NG mixtures. Designated HTS 8547.10.40.00 for ceramic insulators in stationary NG engine spark plug production.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China3%+35.0%38%
🇲🇽Mexico3%+10.0%13%
🇨🇦Canada3%+10.0%13%
🇩🇪Germany3%+10.0%13%
🇯🇵Japan3%+10.0%13%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8547.10Same rate: 38%

If for semiconductor manufacturing equipment spark plugs

Specific subheading for cleanroom/semiconductor spark plug insulators.

6815.19.00Lower: 35% vs 38%

If non-electrical ceramic shapes

Basic ceramic shapes heading without insulating function specification.

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Import Tips & Compliance

Classify based on OEM spark plug blueprints; provide thermal expansion coefficient data; beware of anti-dumping duties on certain ceramic imports from Asia

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