Are Nissan rad caps all interchangeable??

[CanuckQx4]

The description of this nismo rad cap on courtesy parts makes me believe that that rad necks on turbo/nonturbo rads may be all the same, and interchangeable, so I can run a higher pound cap on my car.

This is the link for the overpriced nismo one on courtesy. 18 pounds
http://www.courtesyparts.com/nismo-radi ... cPath=4700&

This is my factory rad cap
http://www.courtesyparts.com/21430-engi ... _7668_9106&


This is the one for the turbo 300zx.16pounds, which is a great price and covers the coolant temp range I want.
http://www.courtesyparts.com/21430-cap- ... _1062_4204&

So can I just buy the one for the 300zx and save some money??

[CanuckQx4]

hmmmmmmmmm

[Ace2cool]

Your factory one looks identical to my TT's factory one, as far as the seals and whatnot go. Also, your NISMO one has the exact same rating as my NISMO one. I wouldn't go as far to say ALL rad caps are interchangeable, but from the looks of it, many are.

[CanuckQx4]

thanks for the info, I think I may chance it...

[CanuckQx4]

anyone else got an opinion?

[Razi]

All of the Nissan rad caps I've seen, looked pretty similar to each other.
I'd guess they are interchangeable, but no idea if all are interchangeable.

[CanuckQx4]

ya I figure there not ALL, but it would be sweet if I could buy the $14 cap meant for the 300zx TT (16lb) instead of $36 for the nismo one specifically labelled for my car