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upstrem

  1. R

    new upstrem O2 sensor for W204 320 CDI

    Hi, my W204 320 CDI is showing an error on the upstream O2 sensor. Price quoted by local indie is £244, which seems a bit steep. This looks like a simple lamda senor which are £70 on ebay. Are they even necessary? Any help gratefully received :thumb:
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