My Mishimoto aluminum radiator has developed a crack. I called them and they asked for pictures of the crack and a receipt of purchase and that it shouldn't take long to replace under thier 'No Questions Asked' lifetime warranty. I got a copy of the receipt from American Muscle and took some pictures so hopefully they follow up on it. The radiator has been great up until now. I know they changed thier design of the mustang radiator from a two core to a three core and addressed some issued with the previous design, I don't know if I have the two or three core design. I bought it July of 2008 after cracking the stock radiator at an autocross event.

 

You're not the only person who has cracked one of those radiators lately.

 

Yeah, I have read quite a bit on people cracking them not long after getting them. The problem is the mounting brackets. They don't allow for much movement of the radiator when the car flexes. I've had this radiator for a year and a hald with no problems, and it truly has been a great radiator, kept the temps down always, never even got a tiny bit hot on the track in the summer. Along with the bad, I've read some good stuff about Mishimoto stuff. I've seen pictures of a Mishimoto compared side-by-side a Fluidine and the Mishimoto had just as good welds and the aluminum was thicker in every category. The problem just is with the mounting brackets and the flexing of the car pulling them apart. The reason mine probably lasted me so long was probably becuase I bent my stock brackets to fit the radiator better. If I see a problem, I'm going to take steps to solve it, not just stuff the radiator in there.

They are sending me a new radiator and revised brackets to 'solve' the issue.

 

Do you have an update for us 01FR500? What happened with that warranty claim with Mishimoto?