Voyagerlad96

I am after some help and advice please. I have a 2001 Voyager and I'm having problems stemming a rear coolant leak. Its not leaking from the underneath pipes as is a common fault, but from the quick release connectors. A small crack at the top of each one as the coolant runs down from the top. Is there anyway to repair this connection? I have been looking everywhere for these connectors and can't find them. Thank you