Well not to say that the 603 is bad or anything, but there are several reports of know problems with these timing chains, what those problems are I don't exactly know, nor how much may be wrongly attributed to the chain and not other things such as tensioners, guides etc.

But in researching I noticed that everyone who has replced a 603 chain, recommends at 200k mile intervals and some have noticed 3-4 deg of stretch in that time, which is what MB calls, time to replace. I just can't figure if it is or can be "normal" to have zero eyeball wear after 215K mi??

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Stable Mates:
1987 300TD 310K mi (Hans)
2008 Jeep Grand Cherokee OM642 165k mi (Benzrokee)