M177-M178 HKS Spark Plug set (4.0l Biturbo) G63 replacement rotors available

replacement rotors available

customised for your specific vehicle setup

2-Step Colder (Extreme Use) Intended for high horsepower builds (700+ hp)

Reduced weight is another less obvious benefit

The goal is correct heat range for your setup

M177-M178 HKS Spark Plug set (4.0l Biturbo) G63 replacement rotors availableHKS Spark Plugs to suit M177 M178 4. 0 litre BiTurbo engines. (set of 8) A noticeable difference in performance over other brands. 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 durability, and combining with the iridium center electrode boosts ignition