I have an 831/2 water cooled , the nipple on the expansion tank broke off .
My expansion tank is the type with the standard radiator cap, the nipple comes off the neck of the expansion tank. I don't know if I could switch this entire tank with one of the tanks that has the nipple coming off the cap itself or not.
    I would prefer to get another neck for my tank,as I understand it the neck is supposed to screw off of the body of the tank.I spoke with the local dealership , they claim that they are not able to get these necks from the factory any longer.
I am located in Iowa.