The 2225CC334KAZ2A from AVX is no longer being manufactured, but we have some options available that could work as alternatives-
VJ2225Y334KXEAT
This capacitor from Vishay Vitramon matches the footprint and most core specifications, but has a lower voltage rating at 500V
C2220C334JBRAC7800, C2220C334JBRAC7800, and C2220X334KBRACAUTO
These options all match the core specifications, but have a slightly smaller footprint, size 2220.
Please review these options to see if they will work for your application.