HKS Super Fire Racing M40I Spark Plug (NGK8) HSV Weight (per rotor): 18

Weight (per rotor): 18

there are no unnecessary upgrade charges and all features and upgrades are included at one low cost

erratic lean AFR spikes

Preassembled Viton O-ring — compatible with all fuel types including E85 and methanol

HKS Super Fire Racing M40I Spark Plug (NGK8) HSV Weight (per rotor): 18HKS Super Fire Racing M Series spark plugs are built for high output and tuned engines that need stable ignition under heat and high rpm. An iridium alloy centre electrode paired with a platinum tipped ground electrode produces a fine, durable spark with strong wear resistance, so ignition stays consistent under boost and sustained load. Features Iridium alloy centre electrode and platinum ground electrode for a strong, stable spark High resistance to