..so I wouldn't go thru the expense of buying a new one. In the rare case that you overheat your engine and your expansion tank overflows, coolant will flow into the overflow tank.

Maybe you can glue it back together?

It's good to know that my expansion tank resembles someone else's (yellow and condensating inside)

Good luck

__________________
-Paul-
'01 E430, Sport 72,000 mi
'98 C280, 126,500 mi