Check your VECI (vehicle emission control information) decal in your engine compartment - ahead of the radiator or perhaps on the fan shroud
5/8 plug socket
i have a 1988 ford ranger xlt 4 cylinder and my spark size is 42-46 hope this will help
13 mm on my 2002 Ford Ranger 4.0 XLT
for what size of engine ?
5/8"
.044
11/16th
5/8"
.034"
Need engine size???
That would depend on which engine size you have
5/8 deep insulated spark plug socket