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

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
Model Number: Spark Plug
Part Number: 939M, QL78YC6