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The Denso K20PBR-S10 is part of the Denso Nickel 3-Electrode range.A Denso nickel spark plug with three ground electrodes. The multi-ground design spreads wear across three electrodes, so the gap stays stable for longer and the plug keeps firing cleanly; the spark jumps to whichever electrode offers the easiest path. Fitted as original equipment on a number of European cars; replace with the same type.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.
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