Does anyone know a way to get the plug in the water jacket out of the passenger side head? What will fit it? 3/8 square drive ratchet and 1/4 inch wont fit...how can i get it out? I need to use that hole for my temperature sensor! Help me out and thanks

 

lightly heat it and then use the 3/8s drive, do not put the fire to the head, only the plug.if the plug turns red remove the heat immediately.