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      11-11-2012, 04:30 PM   #3
C|3R1C
So Kewl Guy
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Drives: 2010 E93 M3 DCT
Join Date: Sep 2011
Location: Los Angeles


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If your talking about the rear O2, which is the one farther from the engine, which it seems like since the front are really easy, you have options. A: take two really really small flat head screw drivers and wedge them in between the two retainers on the coupling. Then pull. B: Huge wrench and leverage. When you go to put them back on, twist the wire again and that will make reinstall way easier.

Anti seize comment still applies.
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2010 E93 M3 / AA Catless X-Pipe / AA Catback / AA Pulley / Vorsteiner Vented Hood and Bootlid E93 Trunk / ADV1 7.1 Wheels GB / LS3 LED Lights / AFE Stage 2 / Velos Designwerks Tune