NGK Spark Plugs HEMI (5.7L, 6.4L) Supercharged or Non-Supercharged vehicle:Non-Supercharged - Ruthenium HX *Check vehicle compatibility on the

*Check vehicle compatibility on the list below

you'll find it easier to race through traffic or tow that camper up the mountain pass

reliable boost while thrashing through the desert dunes

and performance to our premium Automatic Belt Tensioners

NGK Spark Plugs HEMI (5.7L, 6.4L) Supercharged or Non-Supercharged vehicle:Non-Supercharged - Ruthenium HX *Check vehicle compatibility on the*Select if your vehicle is SUPERCHARGED or NON Supercharged before ordering* NGK Iridium IX Spark Plugs supercharged vehicles (16 pack) The Spark Plug serious enthusiasts rely on. Designed specifically for the performance enthusiast with supercharged vehicles! Iridium IX offers extreme ignitability, improved throttle response, and superior anti fouling. We recommend the Iridium IX spark plug! These are a great addition to upgraded RIPP high