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M3 02 sensor in m20

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    M3 02 sensor in m20

    may be a stupid question but..

    I have a new O2 sensor from an e46 m3 sitting on my shelf, (11781743994)(17781405325),

    I want to swap out the o2 sensor in my 325ix to see if it improves my gas consumption...

    Can i use the M3 one ? i'm assuming that the connector would be different, but if i swap the connector, would it work?

    #2
    Should work as long as its a narrowband (4 wires). The E46 transitioned from narrow to wide in '03 or '04 IIRC.

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