Mishimoto MMRAD-IS300-01 Performance Aluminum Radiator, Compatible with Lexus IS300, 2001-2005

This review is a bit late as I bought this over 5 years ago, but I guess I can comment on the longevity. I got this because the plastic cracked on my OEM one after 200k miles, and I'm glad I bought this one.I scored this for $120 in 2019 and that was one heck of a deal for this thing.This is a fantastic rad. I do some drifting and the car never even thinks about overheating with this rad like it did with the stock one.The welds are quality and the hose connectors are in the right place.It comes with a Mishi radiator cap, which is cool, and is still working.And this fits fine with the stock overflow bottle. FYI about the overflow, if you end up having a crack in it, don't bother replacing it since it's crazy expensive. Just use some 2 part epoxy and it'll last forever.Note on fitment though: I have a manual transmission and because this rad is thicker than the OEM one, I had to eliminate the surpentine belt dampener that Lexus originally equipped the vehicle with. They put this on manual cars to dampen the shock to the belt and other accessories, I guess so the belt doesn't squeel. But I have had no negative repurcussions leaving this item off the car.

Installed this for my 2001 Lexus IS300. Pretty straight forward install. My only gripe is that the bolt holes didn't quite line up for the fan shroud, and I wish these came with a petcock for draining the radiator, instead of just a bolt.Other than those two things, it's been working wonderfully. I paired this radiator with HPS heater hoses. My car had Mishimoto hoses with a stock radiator, but they weren't in the best shape.The car stays cool, no leaks, and apparently there were reports of the hood hitting the radiator, but I've not had that problem at all.

Great drop in replacement for my 2002 IS300 manual shift. It's all aluminum so I don't have to worry about the standard plastic housing developing age cracks or seal leaks. I also replaced upper and lower hoses and the thermostat while I had the cooling system apart.Get the OEM Toyota thermostat because it has the jiggle air bubble hole to help bleed the air bubbles instead of a cheaper generic thermostat.

Very high quality piece!! Peace of mind after installed. No more worry about car overheats.

some small details such as the hold down clamp area on top of the rad. was not the correct size they were too small.

Works very well with my 05 Lexus IS300. Needed some minor adjustments to fit the radiator fan but after all said and done, it works and looks quite appealing under the hood.

Fit great on my 02 lexus is300 but need a little trimming to fit the oem fan/shrout

Easy to install, WARNING IF YOU HAVE A AUTO TRANSMISSION YOU WILL NEED A SEPARATE TRANS COOLER!! Oem radiator has trans oil cooling line that go to bottom, this radiator DOES NOT! I would recommend the Hayden 677 for a small easy and great product to install!