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L78V - Champion Spark Plug ( #833M)

Champion L78V - Champion Spark Plug ( #833M)

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$15.33

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SPEEDY DELIVERY
30-DAY RETURN
FULL WARRANTY

Part Number
L78V

Manufacturer
Champion

Replaces OEM 0389471.

Plug Type L78V
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) 0.5
Gap (Inch) 0.063-0.068
Gap (MM) 1.6-1.73
Center Electrode Diameter (Inch) 0.1
Center Electrode Material Nickel Copper Alloy
Ground Electrode Material Nickel Copper Alloy
Classification Champion Copper Plus Small Engine
Resistor Plug No
Manufacturer Heat Range 78
Electrical Terminal Type Non-Removable Nut

NOTE: Champion L78V is listed as a competitive replacement for NGK BUHW-2 as a guide only. Always refer to Champion or NGK catalog data to select the recommended product for specific engines.

Technical information (PDF)
Warranty (PDF)
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Champion Champion Plug (#833m) L78v is equivalent to parts:

  • 509922 Evinrude Johnson OMC BRP
  • 507992 Evinrude Johnson OMC BRP
  • 389471 Evinrude Johnson OMC BRP
  • BUHW-2 NGK
  • 97182Q Mercury Marine
  • 97182B Mercury Marine
  • 896329833 Mercury Marine
  • 833S Mercury Marine
  • 33896329833 Mercury Marine
  • 33 97182Q Mercury Marine
  • 33 97182B Mercury Marine
  • 33   833S 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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