C5 - 2000 o2 sensor

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10-13-2011, 01:58 PM

snow6

1st Gear

Thread Starter

Join Date: Jun 2009

Posts: 11

C5 - 2000 o2 sensor

Hello ,

I am about to order O2 sensors for my 2000 A6 Quattro 2.8. I found two types of O2 sensors in Amazon. Both seems to fit , just one if them is some more cheaper. Any suggestions on which to buy? Thanks

http://www.amazon.com/Bosch-16287-Ox...dp/B000BZI4U2/

http://www.amazon.com/Bosch-16067-Ox...dp/B000BZL0EO/

10-14-2011, 02:45 AM

FonzoB5S4

2nd Gear

Join Date: May 2008

Location: Los Angeles, Ca

Posts: 951

not sure but i think the green one is for the rear(exhaust) and the other is for one of the two in the front(engine). which 02 are you trying to replace?

10-14-2011, 04:11 AM

bigdadi

1st Gear

Join Date: Sep 2010

Location: Boston MA

Posts: 409

I think ...

Pre-cat one better be in OEM as it does more job (talk with MAF) than post-cat which can be the cheap one as it just provides data to compare with pre-cat O2, to tell if the cat is efficient enough.