I recently tried to fix a broken radiator overflow elbow on a 92 300E. Thanks to the fine search capability and the wealth of information on this forum I learned that I was not alone (!) and was able to figure out a temporary fix.

Now, what to do to fix it permanently? I've purchased a new plastic elbow from the local MB shop, but of course the broken off piece is still wedged in the radiator. Is there a way to remove the broken off piece, should I push it through into the radiator, or should I plug it permanently? If I plug it permanently, what happens to the overflow that would normally go into the expansion tank? Do I care? Please advise ... any help much appreciated.

Steve