NGK Replacement Spark Plugs for Hemi Engines OEM Heat Range

797 Performance has done the research to make it easier for you to replace your plugs on your Hemi.  These are a direct replacement plug. Other heat ranges are available for various applications including boost, or nitrous oxide  . 5.7 Non -VVT uses a heat range 5 and a Taper Seal5.7 Eagle uses a heat range 5 and a Washer Seal6.1 uses a heat range 5 and a Taper Seal6.4 uses a heat range 6 and a Taper Seal6.2 SC uses a heat range 6 and a Washer Seal (stock boost only it's advised to use a heat range 7 on a modified 6.2)Manufacturer Spark Plug info - G-Power® NGK G-Power® platinum spark plugs feature a single platinum tip, 98% pure copper core and a .6 mm fine-wire center electrode for more focused sparks and better ignitability. Trapezoidal ground electrode reduces quenching High-grade alumina silicate ceramic for stronger insulation Cold-rolled threads prevent cross-threading and damage to cylinder heads Iridium IX® The improved throttle response, superior anti-fouling and high-i