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RN5C - Champion Spark Plug ( #123)

Champion RN5C - Champion Spark Plug ( #123)

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$3.64

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SPEEDY DELIVERY
30-DAY RETURN
FULL WARRANTY

Part Number
RN5C

Manufacturer
Champion

Replaces OEM 0507665.

Plug Type RN5C
Seat Type Gasket
Hex Size (Inch) 0.813
Hex Size (MM) 20.650
Thread Size (Inch) 0.551
Thread Size (MM) 14.000
Thread Reach (Inch) 0.75
Taper Diameter (Inch) 0.25
Installed Height (Inch) 2.24
Gap (Inch) 0.022-0.028
Gap (MM) 0.56-0.71
Center Electrode Diameter (Inch) 0.1
Center Electrode Material Nickel Copper Alloy
Ground Electrode Material Nickel Copper Alloy
Ground Electrode Quantity 1
Classification Champion Copper Plus Small Engine
Resistor Plug Yes
Resistor Type SAC-9
Manufacturer Heat Range 5
Electrical Terminal Type Removable Nut

Technical information (PDF)
Warranty (PDF)
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Champion Champion Plug (#123) Rn5c is equivalent to parts:

  • 507665 Evinrude Johnson OMC BRP
  • 123 Mercury Marine
  • 33   123 Mercury Marine
Champion Catalog Online


Champion spark plugs use an extruded copper core in the center electrode that maintains accurate control of heat range, optimizing the performance and longevity of the spark plug. This not only will provide you with a dependable start but gives you the confidence that you'll keep going.

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