HKS Super Fire Racing Spark Plug Heat Range 8 for VR38DETT GT-R R35 50003-M40HL ecu connect app gtr Turbulators increase the rate of

Turbulators increase the rate of flow and boost heat transfer netting better cooling of the oil

20mm Exhaust: 10

long periods at highway speeds

All G-Stops conform to FMVSS106-Federal Motor Vehicle Safety Standard- making them DOT compliant and are TUV approved-the German standard that most international regulations follow

Head Diameter: 33

HKS Super Fire Racing Spark Plug Heat Range 8 for VR38DETT GT-R R35 50003-M40HL ecu connect app gtr Turbulators increase the rate ofSUPER FIRE RACING M Series Ultimate spark plug "M". Ignitionability, durability, anti insulation are all reinforced. HKS has made the best plug for both tuning engines and stock engines. Features 0. 6mm Iridium Alloy Center Electrode Iridium alloy center electrode reduces voltage requirement and improves ignition performance and durability. Outer Electrode with Platinum Chip The outer electrode incorporates a square platinum chip which improves