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without transferring to your finger
improving fuel economy and horsepower
it’s far more cost effective than going to a commercial car wash
with reinforced stitching for long-lasting durability
Wipe-off using light to medium pressure in a circular motion
NGK Spark Plug Racing - R5673-10 FD642 without transferring to your fingerNGK Racing Series Spark Plug NGK Racing Series plugs are engineered to withstand the harshest engine conditions. Special insulator nose configurations improve throttle response. Corrugated ribs prevent flashover. Pure alumina silicate ceramic insulator provides superior strength and better heat transfer. Copper core aids in heat removal. Triple seals prevent leakage. Product Specifications Shell Thread Diameter 14mm Thread Pitch 1. 25mm Seat Type
