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CHAMPION PLUG (M838) QL78V

List Price
$6.99

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$0.00
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SECURE CHECKOUT
SPEEDY DELIVERY
30-DAY RETURN
FULL WARRANTY

Part Number
QL78V

Manufacturer
Champion

Replaces OEM 0771770.

Plug Type QL78V
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
Taper Diameter (Inch) 0.35
Installed Height (Inch) 2.18
Gap (Inch) 0.065
Gap (MM) 1.65
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 Yes
Resistor Type Q-Type Inductive Suppressor
Manufacturer Heat Range 78
Electrical Terminal Type Non-Removable Nut

Technical information (PDF)
Warranty (PDF)
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Champion Champion Plug (m838) Ql78v is equivalent to parts:

  • 772341 Evinrude Johnson OMC BRP
  • 771770 Evinrude Johnson OMC BRP
  • 765900 Evinrude Johnson OMC BRP
  • 896329838 Mercury Marine
  • 14103Q Mercury Marine
  • 33896329838 Mercury Marine
  • 33 14103Q Mercury Marine
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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