Question: How much more will you pay?

[EVO-V]

Normally the argument is that a manufacturer will only warrant their product relative to their average mean failure rate.

If a product has a %age of failure that falls within set period by the manufacturer they will only go as far as that.

Meaning if the part fails shortly after the warranty period, you're pretty much screwed yet the manufacturer still has a pretty high quality rating.

Otherwise a really good product doesn't cost a manufacturer that much more to warrant statistically.

[niky]

A good radiator should have an average lifespan of several years, but replacement radiators are often put into cars with already compromosed cooling systems. The warranty means the manufacturers expect your busted-ass vehicle to overheat again within the year.