Champion 939M QL78YC6 Boat Inductive Nickel Alloy Copper Marine Spark Plug

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  • Regular price $5.95
  • 2 available


  • Boat Standard Inductive Nickel Alloy Copper Marine Spark Plug
  • Copper core center electrodes allow for increased conductivity and heat control.
  • Torque Specs: Cast Iron: 26-30 lb. ft. Aluminum: 18-22 lb. ft.
  • Conventional spark plug with nickel alloy electrodes.
  • Stainless-Steel Housing Resists Corrosion.
  • Hex Size: 13/16" in. (21mm)
  • Resistor Type: Inductive
  • Thread Diameter: 14mm
  • Reach: 12.7mm (1/2" in.)
  • Gap: .059" in. (1.5mm) 
  • Thread Pitch: 1.25mm
  • Terminal Type: Solid
  • Seat Type: Gasket
  • Heat Range: 78
  • Material: Nickel
  • Type: Standard
  • Size: 2.5mm
  • Manufacturer: Champion 
  • Part Number: 939M, QL78YC6