L77JC4 - Champion Spark Plug ( #821M)
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List Price
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Your Price
$8.14
10+ In Stock. SPEEDY DELIVERY
30-DAY RETURN
FULL WARRANTY
Part Number
L77JC4
Manufacturer
Champion
Replaces OEM 0386941.
Plug Type L77JC4
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) 0.25
Installed Height (Inch) 2.24
Gap (Inch) 0.027-0.033
Gap (MM) 0.69-0.84
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 No
Manufacturer Heat Range 77
Electrical Terminal Type Non-Removable Nut
Champion Champion Plug (#821m) L77jc4 is equivalent to parts:
- 509927 Evinrude Johnson OMC BRP
- 502194 Evinrude Johnson OMC BRP
- 386941 Evinrude Johnson OMC BRP
- 8M0114742 Mercury Marine
- 896329821 Mercury Marine
- 821S Mercury Marine
- 813418 Mercury Marine
- 33896329821 Mercury Marine
- 33 97186 Mercury Marine
- 33 821S 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.
Replaces OEM 0386941.Plug Type L77JC4Seat Type GasketHex Size (Inch) 0.813Hex Size (MM) 20.650Thread Size (Inch) 0.551Thread Size (MM) 14.000Thread Reach (Inch) 0.5Taper Diameter (Inch) 0.25Installed Height (Inch) 2.24Gap (Inch) 0.027-0.033Gap (MM) 0.69-0.84Center Electrode Diameter (Inch) 0.1Center Electrode Material Nickel Copper AlloyGround Electrode Material Nickel Copper AlloyGround Electrode Quantity 1Classification Champion Copper Plus Small EngineResistor Plug NoManufacturer Heat Range 77Electrical Terminal Type Non-Removable Nut
8.14
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