so, my bimmer can officially buy beer on its own now. turned 18 years old, 2 months ago.
built feb 2001.
not sure how old the radiator is, and i wasn't going to replace it until it leaks or something, but it is getting up there in age.
called some parts store, and they don't stock it. but if they had it, it would be $1000 they said.
so i ordered one off rock auto. will keep it in the spare parts bin, or maybe in the fall, replace it along with coolant reservoir tank. i've replace waterpump and hoses few years ago, along with coolants, so they will be good for just under 10 years still.