[bobkoure]

I'm not sure they actually are discontinued by the manufacturer - just no longer distributed by Swiftech. As I remember, there was a problem with thrust bearings (washer?) which should have never gotten through mfgr testing and q/c. BillA had commented that it cost Swiftech a good deal or time and money to set things straight - and, although he never said so in so many words, I got the impression that the mfgr was less helpful than it could have been in all this. IMHO any of these (something missed in testing, missed in q/c, or unhelpfulness to a distributor) is a perfectly good reason to look a distributor to look for a new source.
Maybe check with Cooltechnica - I think they might still handle this pump...?