NGK Spark Plugs HEMI (5.7L, 6.4L) Supercharged or Non-Supercharged vehicle:Supercharged - Iridium XI Many Dynometers read in different

Many Dynometers read in different net output depending on manufacturer

This classic-style hat is designed to last

maintaining a partial vacuum in the crankcase and improving engine power and response

Key Features:

This can benefit a race application where the engine is subjected to high loads and temperatures

NGK Spark Plugs HEMI (5.7L, 6.4L) Supercharged or Non-Supercharged vehicle:Supercharged - Iridium XI Many Dynometers read in different*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