Where can I find a new replacement or NOS radiator to fit a 57 Merc. any places online you all could suggest? thanks Jim
Try US radiator. The phone number in California is (323)826-0965 and in Arizona is (602)269-3271 . I bought a radiator from them a couple years ago and it has been great. The price of copper has driven up the radiator prices. It is probably cheaper to have your existing radiator repaired by a local shop.
I just got an email from Mac's this morning and they have their radiators on sale for 10-15% off. I'm not sure if your year model is included but it would be worth the try.