HKS 50003-M45XL Super Fire Racing Spark Plug M45XL Iridium (4 pack)

NGK Iridium Racing Spark Plug Box of 4 (R7437-9)

NGK R7437-9 Racing Iridium Spark Plugs 4654 Heat 9 14mm 26.5mm 16mm Set of 4

[Set of 4] HKS 50003-M45HL Super Fire Racing Iridium Spark Plugs Heat Range #9

HKS 50003-M45XL Super Fire Racing Spark Plug M45XL Iridium

DENSO IRIDIUM RACING Spark Plugs IKH01-24 IKH0124 5749 Set of 4

DENSO IRIDIUM RACING Set of 4 Spark Plugs IKH01-24 IKH0124 5749

HKS M Series Racing Super Fire Iridium Spark Plug System Universal 50003-M35I