Looks like Mishimoto just released a racing thermostat for the 350z that is a lot cheaper than the Nismo version. They don't list it under Infiniti on their site but it is the same fit isn't it? Here is the link...

http://www.mishimoto.com/nissan-350z...mostat-03.html

With the MSRP at only $80 some of the Parts guys on here that deal with Mishimoto ought to be able to get these for us at a good price huh?

 

I have their products and like it, but i'd be weary to use their thermostat. Two of my mishimoto caps were no good and the fitment on the radiator was not so hot. If those are indication of their quality, then for something as important as a thermostat, I'd stay away.

 

+1 they're products are at a good price point, but the quality is not very good