I don't have any manuals for my 92 500 sl. Where is the oxygen sensor? Secondly, how do I find one that is reasonably priced? I also read about oxygen sensors for other cars that were modified to fit mercedes. Any down sides to this method? and, which one will fit a 92 500 sl? I am getting ridiculous quotes on them, $175-$300!! That's just for parts.

Thanks,
Vincent

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