Bosch Spark Plug W45T3

The Bosch W45T3 is a discontinued spark plug that is no longer manufactured. Where a current equivalent exists it is shown in the alternatives below.Bosch heat value 45 (higher number = colder plug on the Bosch scale). Approximate NGK equivalent heat range: 2.Heat (NGK scale) is our conversion of the Bosch 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