SPARK PLUG:181 RX 3.0LX RS12YC
Spark Plug Champion RS12YC
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:0.689
Taper diameter inch:0.25
Installed height inch: 2.05
Insulator Projection inch: 0.06
Gap inch: 0.040
Gap mm: 1.02
Center Electrode Diameter inch: 0.78
Center Electrode material: Nickel Copper Alloy
Ground Electrode material: Nickel Copper Alloy
Resistor plug: Yes
Reference to:
Mercury: 401
Johnson/Evinrude/OMC: 502181
Pricing is per unit.
The references that are listed here are trademarks that apply to the respective trademark owners. The references are used only for a reference purpose. Our product is compatible with these reference numbers. Please note that our product is an aftermarket product (non-OEM), unless otherwise stated.