Champion 821 L77JC4 Nickel Spark Plug

Conventional spark plug with nickel alloy electrodes. Copper core center electrode allows for increased conductivity and heat control.

• Shell
• Thread Diameter14mm
• Thread Pitch1.25mm
• Seat TypeGasket
• Reach12.7mm (1/2")
• Hex Size13/16" (21mm)
• Terminal TypeSolid
• Gap.039" (1.0mm)

• Center Electrode
• MaterialNickel
• TypeStandard
• Size2.5mm
• ProjectionNon-Projected

• Ground Electrode
• MaterialNickel
• TypeCut Back
• Quantity1

• Specifications
• ResistorNo
• Heat Range77
• Torque SpecsCast Iron: 26-30 lb. ft. Aluminum: 18-22 lb. ft.

• Part Information
• BrandChampion
• WarrantyLifetime
• LongevityUse Equipment Recommended Replacement Interval

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