Engine radiator Koyo or Denso

Koyo has better fitment than Mishimoto tho, I think that's more important as they both have good warranty. One thing to note is the only radiator Koyo has for the DE that is OEM design is the larger one, the smaller one it the cross flow, which is better performance wise but puts the radiator cap on the passenger side. That's the one I currently have.

Im in AZ, and I was hitting up in the 225+ coolant after a Grimmspeed FMIC, and so I went ahead and upgraded to a koyo. Now I’m staying around 196-206 depending on situations. Highest I’ve seen is 208 or so.

I have a Koyo radiator on my 2019 and am really impressed with it. You get a thicker core and all aluminum construction so you don't have to deal with the metal/plastic interface of the OEM one that can crack/leak over time.

I've been using an OEM style Koyo Radiator for the last 10 years on a clutch fan. Multiple track days and never any overheating issues.

I opted for a stock replacement Koyo with the plastic end tanks again. It'll get you buy for another 10-15 years and 100k miles.

Bought a Koyo rad for my na. Fit like a glove and it's hand built "from what I've heard"

My koyo was bought secondhand, has done many track days and 40k street miles over 5 years, and I even accidentally tried to jack up the car with it. It's still going fine.

I also replaced the radiator (I went Denso, not oem). It\u2019s gxor-ish recommended preventative maintenance every 100k.

I spent two years (off and on, as it only overheated when idling in 90+ degree conditions or when doing low-speed jeep trail climbing in the heat) chasing this on my rig. Over time, replaced fluid, thermostat, radiator cap, clutch fan. No joy. Finally pulled the radiator, and the front fins were horribly blocked. Replaced with a new Denso, and problem solved. Only issue with the new Denso was that the mounting rails on the new radiator were shite, but it was a matter of four bolts to swap over the old rails (with upper shroud still attached) to the new radiator.

installed a koyo radiator. Very beautiful fitment