I think I need some precat o2 sensors for my b5 s4

[JSRS6]

So I decided to drive my s4 for the last week my beast is in the shop, but the last time I drove it, I was acting like it was running really rich, so I am suspecting my precat o2 sensors as the culprit. Haven't been able to vag it in awhile, but the last time I did it was getting an intermittent lambda code. Can anyone give me the part numbers for both banks precat sensors?

[ben916]

I don't have ETKA 7 at work but could try and look it up tonight unless someone else gets to it before me...

[JSRS6]

Thanks Ben. I need to get some by Tuesday. I need to put them in Tuesday so I can turn in the rental.

[hahnmgh63]

Pre Cat O2 sensor for a APB engine 2.7T is Audi part# 078-906-265-M there is a different part # for the rear left & right but the front right & left are the same part #.

[ben916]

Is that Model AA4C?

What year?

EDIT: OK AA4C is A4 Cabrio...
Lemme keep searching...

[hahnmgh63]

I'm assuming your S4 is model year 2002 engine code APB?

[JSRS6]

yes, yes of course. 2001.5, lol. im just gonna go to autozone since im in a time crunch. Audi quoted me like 250 each, LMAO.

[hahnmgh63]

www.worldimpex.com (http://www.worldimpex.com) has them for $135, OEM Bosch.