NGK BP4HS

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  • B- Meaning it has a 14mm thread size and a 13/16" hex size
  • P- Projected insulator type
  • 4- Position on heat range from 2-12 (2 hottest, 12 coldest)
  • H- 12.7mm (1/2") thread reach.
  • S- Standard 2.5 mm Center Electrode

cs:NGK BP4HS

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