The Koyo Aluminum Radiator for the Subaru WRX and STI is a performance lightweight aluminum is specifically designed and built for the WRX and STi. Mounting brackets allow for the use of the stock fans, eliminating the need to purchase an aftermarket fan.
Polished to a near chrome finish, this radiator enhances the engine compartment of a 'show' destined Subaru WRX/STi. Koyo radiators use an aluminum core, even the end-tanks are made of aluminum, cores are NOCOLOK-brazed.Overall expect this upgraded Koyo performance radiator to provide your Subaru WRX with 20-30% more cooling than any standard radiator and also have the capabilities of handling a high revving, high performance motor.
Note: This radiator fits the 2002-2007 Subaru WRX and STI manual transmission / w/ Filler Neck.
Easy installation. Line up for fans was easy. Had to change out upper hose clamp because of leak. Well built.
I ordered my Koyo radiator after blowing my stock sti one apart on the top, as usual import image racing had it to me in two days. The radiator itself is amazing. My car doesn’t run over 196 now when moving and the service from iir is awesome. Since my first purchase with them they are the only site I order parts from. Customer service is over the top with them and wouldn’t wanna deal with anyone else for my parts.
Thanks iir for always getting me what I need for the best price and fastest shipping!
I searched around all the top tier subie websites and iir lead the pack in pricing and not to mention quick shipping and another perk for me is the point program, cant beat it $1=2points 👌👍 they quickly accrue. And the Koyorad top notch and quite beautiful to look at, fitment perfect, dropped right in and OEM fans bolted right which Koyorad was on there game and included all the hardware to bolt the fans and expansion tank piping up. Just to add as a fyi I have a 2006 wrx wagon and o filled it up with 2 gallons of OEM Subaru super cool blue coolant and also koyorad includes drain plug but make sure it is tight as I had to give mine a turn to snug it, it is aluminum so be cautious.
Thanks iir another satisfied customer look foward to future business 🙏
Best overall value. Perfect fit. Have had other racing radiators that are so bit they barely fit and leak. Replaced with this one as I already had one in another car. No leaks or problems after years. Would buy again without a thought.