Engine radiator Koyo or KOYORAD

got a Koyorad off Rock Auto for around $100 and slapped it in there. Runs like a champ. It is a pretty easy job if you're mechanically inclined.

Koyo radiator is the move, it’s all aluminum, no plastic to worry about, the drain plug is legit and there’s a port to add a coolant temp sensor if you want gauges. It has an extra row for better heat exchange and dissipation my only complaint is there’s no aftermarket specific dual cooling fan set up which I feel would do wonders for cooling the engine bay at idle .

I've had a Koyorad in my 97 for 5 years now and it's been great.

i recently put a koyorad in mine as well, the hoses at the bottom took me forever to work with but it was worth it

I run a 190 in my Honda v6 swapped Miata with a koyorad and it never overheats even in hot weather

I replaced it with a OEM style koyorad I found for $130 and corrected the radiator caps and my temps have been perfect all summer. It is a bitch to burp the coolant so I recommend buying the spill-free funnel.

I looked at what I bought like 165k and it was KOYO Radiator A1998 for $175 and I'm like 100k miles later and it still looks good. I just wanna change it for preventative maintenance since I'm gonna have my mechanic add the external cooler

The Koyorad full aluminum radiator is the one to have. Paired to your Hayden 698 since it doesn’t have a section to cool the trans fluid, however definitely worth it for durability as the next alternative over OEM replacement rad.

I run a Koyo 37mm radiator... and I will hit 200+F under hard driving. Under normal driving, my coolant temps are in between 178-185F.

Koyo N flow. Only rad you’ll ever need. Even though you want to keep it “stock” the OEM style plastic crimped end tank design is a time bomb and should be avoided.