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Hello all,
I'm preparing to do some DIY work on my 2012 Audi A5 Quattro 2.0.
I just want to be 100 percent certain before I proceed. Seems pretty straightforward.
The two O2 sensors I plan on replacing.
Can you verify the right BOSCH part numbers for Upstream and Downstream and that the locations I have marked in the photo are indeed correct?

Thanks so much!
Light Motor vehicle Automotive tire Hood Steering part
 

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2014 A4Q/8K 6MT MMI 3G+
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Upstream: VAG 1K0998262L (list $308); Bosch 0258017178
Downstream: VAG 1K0998262T (list $250); Bosch 16002
 

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Seems a little early for needing new O2 sensors. At those prices, are you certain they're the problem?

I had a inefficient catalytic converter error (check engine light) show up 2 weeks ago. The diag process mentioned a potentially bad O2 sensor. You can use VCDS to do real time monitoring of the sensor readings... but I was lazy and just put in a bottle of Gumout Regane fuel system cleaner. The code never came back.
 
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