Toyota Denso Iridium Spark Plugs For 4 Cylinder
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Toyota Spark Plugs are all resistor plugs with single ground electrodes feature patented U-goove design, resulting in a hotter spark. The Copper-tipped plugs are designed to last up to 150,000 miles before replacement. Toyota adds nickel and iridium to the platinum; this alloy helps make the spark plug strong and durable, while helping to prevent cracking.
