Spark Plugs

HKS SUPER FIRE RACING MR45XLZ - 50003-MR45XLZ

HKS SUPER FIRE RACING MR45HLZ - 50003-MR45HLZ

HKS SUPER FIRE RACING M50HL - 50003-M50HL

HKS SUPER FIRE RACING M45iL - 50003-M45IL

HKS SUPER FIRE RACING M45i - 50003-M45I

HKS Nissan/Infinity VQ35HR M-Series Spark Plugs (One Step Colder) - 50003-M45HL

HKS SUPER FIRE RACING M45G - 50003-M45G

HKS SUPER FIRE RACING M45 - 50003-M45

HKS 10 Hyundai Genesis Coupe 3.8L M-Series Spark Plugs (Heat Range 8) - 50003-M40XL

HKS SUPER FIRE RACING M40iL - 50003-M40IL

HKS Nissan/Infiniti VQ35HR M-Series Spark Plugs (Stock Heat) - 50003-M40HL

HKS SUPER FIRE RACING M40G - 50003-M40G

HKS General Application M-Series Super Fire Racing Spark Plug - 50003-M35IL

HKS SUPER FIRE RACING M35i - 50003-M35I

Ford Racing 11-21 Mustang GT 5.0L Cold Spark Plug Set - M-12405-M50A

Ford Racing 21-25 F-150 5.0L Coyote (w/Variable Displacement) Cold Spark Plug Set - M-12405-50VDE

Ford Racing 19-24 Ranger/Bronco 2.3L/2.7L / 11-21 F-150 3.5L EcoBoost Cold Spark Plug Set - M-12405-35T