NGK 6729 BP8HS-15 Marine Boat Standard Spark Plug for Mariner Mercury Outboard

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  • Regular price $5.95


  • Standard Spark Plug 
  • Resistor: No
  • Size: 2.5 mm
  • Heat Range: 8
  • Type: Standard
  • Material: Nickel
  • Seat Type: Gasket
  • Overall Height: JIS
  • Thread Size: 14 mm
  • Gap: .059" (1.5 mm)
  • Projection: Projected
  • Terminal Type: Solid
  • Longevity: 30k Miles
  • Reach: 12.7 mm (1/2")
  • Thread Pitch: 1.25 mm
  • Hex Size: 13/16" (21 mm)
  • Triple seals prevent leakage.
  • Copper core aids in heat removal.
  • Corrugated ribs prevent flashover.
  • Trivalent metal plating provides superior anti-corrosion and anti-seizing properties.
  • Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer.
  • Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.
  • For use with: Mercury - 10 HP, 10 Sea Pro, 15 HP, 15 Sea Pro 2-Cyl, 9.9 HP, XR10, Mariner - 10 HP, 15 HP, 2-Cyl, 9.9 HP, Magnum, Marathon, Marathon 15
  • Manufacturer: NGK 
  • Model Number:  6729
  • Part Number: BP8HS-15