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2012 550ix O2 Sensors, location?
First time replacing bimmer o2 sensor.
Is it safe to assume that because 550i has v8 turbo it has 4 O2 sensors?
Are the pairs the same shape configuration? meaning the two upstream identical to each other? Same question for the downstream. I am asking because my searches to purchase the upstream do not show any upstream discrimination as far as compatibility, presuming that there are 2 upstream.
If anyone can share their locations are they in the usual expected place before and after the catalytic converter? Or under the hood?
Thank you
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