Guaranteed to deliver quick starts, good fuel economy and smooth acceleration. Autolite® Copper Core plugs are your industry standard.
Copper-glass seal bonds insulator, terminal post center electrode together; assures full required voltage at spark gap; gas-tight seal (100% leak proof)
Multi-rib insulator reduces danger of "flash-over"
One-piece terminal post adds strength
Resistor reduces radio frequency interference (RFI) and electrode erosion
Cold-formed steel shell precision rolled threads
Full copper core electrode provides better performance in all conditions
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