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More Information for NGK 5643
Standard Spark Plugs
The workhorse, at the heart of smooth-running engines around the world.
  • Triple-Gasket Sealing Process
  • Corrugated ribs to prevent flashover
  • High dielectric strength
  • Proper heat transfer
  • Consistent Performance
Thread Diameter14 MM
Ground Electrode Tip DesignStandard
Ground ConfigurationStandard
Ground Electrode Core MaterialNickel Core
Center Electrode Core MaterialCopper Core
Center Electrode Tip MaterialNickel
Gap Size0.044 in
Ground Electrode Quantity1
Hex Size5/8"
Insulator HeightISO
Manufacturer Heat Range5
Additional Info5K Ohm
Seat TypeGasket
Alternate/OEM Part Number(s): BKR5ESA11

NGK Warranty Information
60 days for Spark Plugs; Limited Lifetime for Spark Plug Wires