Dorman supplier Do you have the size? If so, any local auto parts store that supplies Dorman products should be able to get one for you. I think it might be a 1-13/16" or 1-15/16" plug? I had to get one a couple of months ago but don't remember the size. And now that the engine is back on the frame, I can't go out and get the size or the Dorman number. These are standard freeze plugs, so they aren't expensive. Maybe you could ask a parts store to order you an assortment, say, from 1-3/4" thru 2-1/16", and return the plugs that you don't need? Good luck.