Thread: Is It Necessary To Replace Post-Cat O2 Sensors as Prev. Maint?
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Old 01-16-2013, 07:28 PM
kgorczyn kgorczyn is offline
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Location: Melbourne, FL
  
Join Date: Jul 2005
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Mein Auto: 2000 528i SP/PP
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Is It Necessary To Replace Post-Cat O2 Sensors as Prev. Maint?
I have a 2000 528i w/ 235k miles - no codes or anything. I replaced pre-cat at 100k and 200k. Post Cat are still original.

Do they affect anything other than emissions?
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