Maybe because of the earthquakes ans tsunami still? I didn't have a problem ordering mine during the summer last year (for my 6-6 TL).They're hard to obtain for some reason.
It's supposed to be changed every 60k or sooner if it fails. There's a thread that shows how to check it, but most people just shake it. If it "clicks", then it still works.Jore99
No one asked you but why do you have to change your PCV? Did you get a code Cel come up? I have a 06 V6 with 190,000kl and I was thinking changing it. There is no way to check if working okay or is there? I am planing on adjusting my valves in May.