I have replaced my O2 sensors on my 97 328. I use a 22mm or 7/8 inch
"Flare Nut Wrench". It has a notch cut in it that will fit over the
wire, and grabs a majority of the 6 corners on the sensor nut. You can
get one at Home Depot, or auto part stores. I think mine came from
Schucks (Krogers). Sometimes the bend on the wrench end isn't quite
enough to fit well, but a vise and some heat, and you can re-bend the
wrench end enough to fit easy.
On Mon, 20 Nov 2006 23:09:53 -0500, Mike Klein
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