So I've done my best searching online for help with this, the top of my radiator was leaking alot the other day like half a gallon and I put some leak crap in it and it stopped for now realized there was something from under the upper radiator hose coming out so I re-hooked the hose and everything Kind've seem fine, it's been leaking today very very little and uncommon idk where it comes from if its like the top of the radiator where the it looks like its connected or what it's just ew everywhere I went to a shop it'd be 400$ for radiator + labor + coolant flush, and supposedly 2 year warranty but the guys customer service isn't good and seem very pushy, then another place was 830$ or something in Phoenix, with some radiator called an "ADI" brand radiator i never heard of, Idk wtf is going on and Nissan is 732$ alone for the OEM radiator.
I'm heavily confused and just about to give Nissan my guestimate of 1,000$ to give me a stock radiator and real Nissan tech labor.
I would replace it myself but I have no idea with A\T cooler I saw the DIY on the manual radiator and like 99% of radiators online is like **** or manual.

Any advice? Phoenix area.
I'll try to post some 4k images. Thanks guys!

Update; 4k pics
Upate 2; i saw it coming down like a river from under the reservoir too




This is to, looking at the engine, to the right of the hose by the reservoir.




This is to the left of the hose, so front right edge.




This is on oppsoite side, the left side of engine

 

Replacing the radiator should be the same for an auto. For the prices you are mentioning, I would just get an aftermarket radiator and install it my self.

 

Problem is they don't make aftermarket rads for Auto cars cause they need the cooler


Best bet is getting your own transportation cooler and hooking that up with a upgraded rad

 

There's a certain part of the radiator that connects to automatic transmission cooler and alot of the aftermarket ones don't have it.
It looks like it leaks from under the hose I don't get it so I'm going to buy a new hose tomorrow and clamps at Nissan and try that after work - unless it's worse before I buy them. But it runs along from the other side like a little river flow, and it was mostly leaking on driver side not hose side unless it went down into the pan and out the other side, and a boiling tsss noise on the other side that hose isn't on. But lots of leakage from right under the hose. I don't get it.

edit: there is aftermarket auto tranny coolers for like 80$ I saw that too just duno how they work

 

Go to oreillys or autozone. Buy an OE radiator, which comes with lifetime warranty. It has the trans oil cooler built in. It's two lines on the bottom backside of the radiator. I just did this two weeks ago when my life's radiator blew. Super easy to do, just gotta fight the a/c condenser tabs a bit but still easy. Took me 2 hrs and I was going slow

 

And u do not have to disconnect the a/c, there is enough room to wiggle it out once u free the tabs from the bottom of the radiator

 

go on ebay and get one for like $40..

I got mine and it works fine. It is the A/T style with the nipples but I just dont use them. All the aftermarket ones have the AT nipples.

$40 and go. Probably spend that much from buying stop leak. Its maybe a 30 min job. Longest part is burping the rad fluid.

 

Autozone here only brought up a "Spectra Premium" radiator.

 

I provided some 4k pics for some good views ig, i even used this doctor tooth mouth thing and looked under the hose and it seems like its a river flow from the other side and just leaks under the hose cause idk why, also the first day it was pouring on the driver side so.
Also i tested it and it was coming from under the reservoir too.
And my reservoir kinda depletes itself

 

Mishimoto and other aftermarket brands do not have the trans cooler built in. I searched and called to verify from my vendors and contacts. All OE style brands carried by autozone or oreillys will have the trans cooler since it's supposed to be like OEM but cheaper. The one I installed in my wife's Z works fine and fits the same as the OEM stock one

 

Try another store like pep boys or something similar. Or if spectre states they are OE style, then just open the box there and verify the two nipple are there. That's what I did at oreillys before buying

 

what are these two nipples you guys talk about

 

 

It could be leaking from the rubber seal on your radiator cap.. I know that's not the technical term but it's the plastic piece that covers the top and has the tabs bent around it. There's a rubber o-ring type gasket in there and if it gets dry rotted it can leak. I had that happen to my Chevy and I went to the junkyard (although it's easier to find a Chevy Truck than it is a z) and bent the tabs out, removed the cap and ring, replaced the ring and added some silicon and pressed the tabs back on. Never leaked again. It's worth a shot to check that out.

 

Yea the $40 ebay ones are the exact ones my Z had from the factory. But of course the dealership wanted like $100 from them. And then $$$ for labor. Not that I was going to do it, but they want like $400 for "parts and labor" replacement.


And of course they "have to special order it" since they don't carry it lol


OP just go on ebay and search 350z radiator. Its basically any of those.

 

Man....I've always called them nipples where two black hoses plug into. Well, the hoses slide over them so however that goes in your imagination, just look for that on the back of the radiator near the bottom.