Denso Iridium Power Spark Plug Ik24 5311

Heat ngk scale is our conversion of the denso heat number onto the ngk scale, so plugs from different makers can be compared on one hot-to-cold ladder. Makers' cross-references can be half a heat range apart, and plugs have moved up or down the scale over the years where no direct replacement exists, so treat it as a guide and check the recommendation for your vehicle.

Heat ngk scale is our conversion of the denso heat number onto the ngk scale, so plugs from different makers can be compared on one