Appreciate all responses and intent. I am not trying to be cheap by not purchasing a new radiator to fix problem but I am a believer that new is not always better. Apparently current economical conditions are causing a relaxation of effort in regard to quality control. If part is frequently subject to failure, it would seem wise to look for a solution or remedy before replacing the part with a new same defective part. The plastic neck is not deteriating or about to break off. As I attempted to explain in my description of crack: it is about 1/4" to 3/8" (8 to 12mm) long, on top of neck between hose and radiator, longitudinal in direction, and leaks very little when hot. My thinking was, if the plastic can be sealed to the aluminum, there must be an adhesive or heat involved (maybe both) and the same process can be used to seal a small crack. I suspect that the crack was caused by someone or mechanic that leaned on the part with possibly an elbow. I have requested Behr provide me with information as to type of plastic used but, no response as of this date.