Engine radiator VALEO or Koyo

My 2012 Sti with a Koyo aluminum radiator makes plenty of heat even down below 0°F

You can get a koyo radiator for like $160 bucks. I have an Avalon that looks identical under the hood. If it takes you more than 1 hours start to finish something went wrong.

I went to the same thing this past summer(vegas) until I changed to koyo rad.

the Koyo certainly looks much better. You won't notice any difference in cooling between the two.

I'd go with Koyo for price and ease of install. My reservoir hose nipple broke on my OEM radiator (OEM has plastic tanks) so I went with all aluminum for durability. My RX-8 also only drives on race tracks, so the extra cooling is nice.

I'd replace it with a fully aluminum one just because of that pesky plastic nipple that's prone to breaking. Koyo makes a good one.

My NA 1.4 OE failed (long time ago) because of aluminium tubing corrosion (brine). So replacement Valeo got paint treatment . So far 100k km without problems.

I’ve had really good luck with Koyo radiators in the past as a really good replacement. The couple all aluminum radiators I’ve had, I really wasn’t impressed with the quality of construction.

I went Koyo. For me even with a stock engine its worth it not to have a plastic seam to worry about.

I recently installed a Koyo radiator in my s13 to replace the stock one that had been leaking. I bled the air thoroughly when I filled the system with a spill free funnel and the bleed screw on the water outlet. Even after doing this, my car started overheating intermittently after driving around for a bit. When I stopped, the upper hose and radiator were very hot but the lower hose was cool to the touch. I tried to bleed more air out of it with the spill free funnel, but no air came out, and the water in the funnel started getting hot and overflowing. I pulled the thermostat to verify if it's functioning properly and it is, also it's the type that will stay open in the event of failure. This might seem silly, but I feel like the thermostat is closing and opening because the radiator is cooling too well.