Spark Plug Champion RV9YC
Spark Plug Champion
Seat Type: Tapered
Hex size inch: 0.625
Hex size mm: 15.880
Thread size inch: 0.551
Thread size mm: 14.000
Thread reach inch:0.441
Taper diameter inch:0.31
Installed height inch: 2.2
Insulator Projection inch: 0.06
Gap inch: 0.035
Gap mm: 0.89
Center Electrode Diameter inch: 0.1
Center Electrode material: Nickel Copper Alloy
Ground Electrode material: Nickel Copper Alloy
Resistor plug: Yes
Reference to:
Mercury: 400 400S