NGK 1637 - Alternative spark plugs

There are 8 replacement spark plugs for NGK 1637. The cross references are for general reference only, please check for correct specifications and measurements for your application.

    Specifications for NGK 1637
  • Thread diameter: 14.0 mm
  • Thread reach: 26.5 mm
  • Hex size: 16 mm

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Replacement spark plugs for NGK 1637 on Amazon

The spark plug Cross References are for general reference only. Check for correct application and spec/measurements. Any use of this cross reference is done at the installers risk.

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