[Set of 4] HKS SUPER FIRE RACING 50003-MR40XLZ Spark Plugs Heat Range No.8

Name: [Set of 4] HKS SUPER FIRE RACING 50003-MR40XLZ Spark Plugs Heat Range No.8
Brand: HKS

HKS

**** Description ****\u25A0This spark plug is compatible with the M12 and Bi-HEX14 shapes used in the GR Supra and BMW B-type engine (B58, B48, B38) vehicles.\n\n\u25A0 NGK heat value No. 8 equivalent, ideal for replacing genuine products, and heat value No. 9 equivalent, which provides a higher grade of peace of mind during tuning.\n\n\u25A0Wear resistance is improved by ruthenium alloying the central electrode.\n\n\u25A0The center electrode diameter of 0.6mm reduces the required voltage and improves ignition performance. (Stock 0.8mm)\n\n\u25A0Grounding electrode with platinum alloy tip improves wear resistance and ignitability. Shortened length of the grounding electrode contributes to electrode strength and durability.\n\n\u25A0The ground electrode has a built-in copper core to suppress temperature rise of the electrode and improve durability.\n\n\u25A0The MR45XLB is designed to minimize the dimensions protruding into the combustion chamber, making it less susceptible to the heatt