NGK 6651 - Alternative spark plugs

There are 10 replacement spark plugs for NGK 6651. The cross references are for general reference only, please check for correct specifications and measurements for your application. When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include Amazon Associates.

    Specifications for NGK 6651
  • Thread diameter: 12.0 mm
  • Thread reach: 19 mm
  • Hex size: 16 mm

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Replacement spark plugs for NGK 6651 on Amazon

Applications of NGK 6651

Brand Model Engine size HP KW Year Engine # of cyl Spark plug gap
HARLEY-DAVIDSON Sportster Custom 53 883 2004 - 2005 2 0.9
HARLEY-DAVIDSON Sportster 883 Iron 883 2009 - 2 0.9
HARLEY-DAVIDSON Sportster 883 Low 883 2004 - 2 0.9

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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