They
were supplied by Griffin but were made by an outside vendor for some stock
application. My opinion is that the failures were larger a problem with
the installation. Because of pressure drops in the loop, the cooler was
seeing max pump output pressure, and unsupported line to the cooler could have
caused fatigue failure due to vibration.
I
have a custom cooler made by Griffin that is very robust and well built. I also have a custom
radiator from Griffin; also appears to be top quality. Neither of these has flown
yet.
Al