Spark plug Champion RTN79G-540

Technical information:

Electrode: Copper + Gold / Palladium – Gold / Palladium
Thread Size: M14x1,25
Resistor: 6-15 kOhm
Reach: 19mm (3/4″)
Hex Size: 13/16″ (20,8mm)
Gap: 0.4mm

Center Electrode
Material: Copper + Gold / Palladium

Ground Electrode
Material: Gold / Palladium

Specifications:

wrench size: 20.8 mm