E3 .18 Small Engine Spark Plug
Limited Lifetime Warranty; this just might be the last spark plug you'll ever buy. The patented DiamondFIRE technology produces a no foul spark plug that improves fuel economy up to 13%, increases power up to 12% and reduces emissions up to 58%. Replaces Champion N4C, RN4C, N5C, RN5NC, N11YC, RN11YC, N12YC, RN12YC.
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