Description
NGK Iridium Spark Plug Box of 4 (LFR7AIX)
NGK Iridium Spark Plug Box of 4 (LFR7AIX)
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We recommend heat range 8 for those putting out 500-600hp and doing long sustained wide open throttle racing. Designed specifically for the performance enthusiast. Iridium IX® offers...
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NGK Spark Plugs (U.S.A.), Inc. is the largest OE supplier and manufacturer of spark plugs for domestic and import vehicles in North America. Its OE legacy, unsurpassed quality and leading vehicles in...
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Stock heat range Iridium spark plugs for K-series engines. The improved throttle response, superior anti-fouling and high-ignitability makes Iridium IX® ideal for the performance enthusiast...
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We recommend heat range 7 for SR's putting down 300-450hp.If you are at 450hp, and doing long sustained wide open throttle events such as road racing, we recommend stepping up to heat range 8 for...
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This is 1-step colder plugs for the RB26. We recommend BKR7EIX for 400-550hp range. The improved throttle response, superior anti-fouling and high-ignitability makes Iridium...