Copper Plus Spark Plug 821, Type L77JC4
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CHAMPION SPARK PLUGSCopper Plus Spark Plug 821, Type L77JC4


In stock online.
Model # 20023826 | Mfg # CHAM821UPC # 37551000678


Copper Plus Spark Plug 821, Type L77JC4

Name Value
Type Copper Plus

Product Overview

CHAMPION SPARK PLUGS Copper Plus Spark Plug 821, Type L77JC4

This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.


  • Copper Plus provides dependable performance and durability
  • OE type replacement plug
  • Superior corrosion resistance and resists fouling
  • Copper core center electrode allows for accurate control of heat range for longer life
  • Built to ISO and SAE standards for proven performance


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