Welcoe to the board and congrats on your farily recent purchase.
As for you question the factory fans will not just bolt up to the Koyo Radiator. You can likely make it fit with some ingenuity but I never tried.
Personally I just bought the biggest fans I could fit from Autozone (2 10" fans) and used those to mount to the Koyo. For those you have a splice into your harness and make sure youhave the fans sucking air towards the motor (the fans go certain direction based on which way you have it wired and there are only two wires so it is easy).
The other route you could go is buy some Fal fans which are more expensive and buy something to mount it with (you should be able to buy things to mount it with from Autozone which are the same things that come with the setup I mentioned up above).
norge187 wrote:I just bought my 04 Sentra SER Spec V in november and i've done a couple of mods already but i'm looking into putting a Koyo racing radiator, the only ? I have is, is if the factory clutch fans that are mounted by the stock radiator will work. If not does anybody have any idea how much those things run, and if the factory fans are compatible?
The only things i've done to my Spec V is a full racing Megan Exhaust including the racing 4:1 header and a Nismo Cold Air intake. I'll post some pics once I get a scanner.