HKS SUPER FIRE RACING M45iL
HKS SUPER FIRE RACING MR45HLZ
HKS SUPER FIRE RACING M50HL
HKS SUPER FIRE RACING M40iL
HKS Nissan/Infiniti VQ35HR M-Series Spark Plugs (Stock Heat)
HKS SUPER FIRE RACING MR45XLZ
HKS Rotary Applications M-Series Spark Plugs Heat Range 10.5
HKS 08 Lancer Evolution GSR/MR M-Series Spark Plugs (Heat Range 9)
HKS Nissan/Infinity VQ35HR M-Series Spark Plugs (One Step Colder)
HKS 10 Hyundai Genesis Coupe 3.8L M-Series Spark Plugs (Heat Range 8)
HKS SUPER FIRE RACING M40LF
HKS General Application M-Series Super Fire Racing Spark Plug
Ford Racing 11-21 Mustang GT 5.0L Cold Spark Plug Set
Ford Racing 21-25 F-150 5.0L Coyote (w/Variable Displacement) Cold Spark Plug Set
Ford Racing 3V Cold Spark Plug Set (16mm Thread)
Ford Racing 19-24 Ranger/Bronco 2.3L/2.7L / 11-21 F-150 3.5L EcoBoost Cold Spark Plug Set
