I don't think it'll fail, nylon is nylon, if it doesn't leak it should last.

 

I actually would expect longer personally. I replaced one of my Toyota radiators at 200,000 miles, have never touched my other Toyota radiator with 160,000 miles and have run plenty of others past 200k without touching a radiator. If using premix or properly mixing with distilled water they should last a very long time.

 

The OEM's are certainly still available. My local dealership got mine next day. Majestic has them as mentioned.

 

I have replaced mine with Koyo OE-style in 2015. The box says made in Indonesia. Three years now, no problem.

 

Can someone post a picture of the hairline crack area and what to look for -- assuming it's not leaking as that would be an obvious tell.

 

They look like stretch marks, you have to look closely right next to the upper hose and under the filler neck. Once you start getting these stretch marks it's only a matter of time.

For the record my car had the stretch marks when I got it, and the radiator went the better part of 70k miles before it started leaking. YMMV.

 

Mine was one long, hairline crack that eventually made it through right along the seam between the tank and core. I smelled it when I got home one night and first saw it when I noticed the foam cushion on the side of the radiator was wet. Much better than finding out by a rapid overheating on the highway!