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RV12YC - Champion Spark Plug ( #406)

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$5.19

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SECURE CHECKOUT
SPEEDY DELIVERY
30-DAY RETURN
FULL WARRANTY

Part Number
RV12YC

Manufacturer
Champion

Replaces OEM 0912937.

Plug Type RV12YC
Seat Type Tapered
Hex Size (Inch) 0.625
Hex Size (MM) 15.875
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) 0.038-0.043
Gap (MM) 0.97-1.09
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
Resistor Plug Yes
Resistor Type SAC-9
Manufacturer Heat Range 12
Electrical Terminal Type Non-Removable Nut

Technical information (PDF)
Warranty (PDF)
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Champion Champion Plug (#406) Rv12yc is equivalent to parts:

  • 912937 Evinrude Johnson OMC BRP
  • 97389 Mercury Marine
  • 406S Mercury Marine
  • 406 Mercury Marine
  • 33 97389 Mercury Marine
  • 33   406S Mercury Marine
  • 33   406 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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