special tool needed to replace O2 sensor?

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Mike Klein - 21 Nov 2006 04:09 GMT

Can anyone tell me if I need a special "split" or "slit" socket (22 mm)
to replace the O2 sensor in a 1995 325is? Or will a normal one work on
this car? Any tips on doing this job?

Thanks,

Mike

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yaofeng - 21 Nov 2006 05:33 GMT

Lower the exhaust. Use the regular open wrench to remove it.

> Can anyone tell me if I need a special "split" or "slit" socket (22 mm)
> to replace the O2 sensor in a 1995 325is? Or will a normal one work on
[quoted text clipped - 3 lines]
>
> Mike

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Josh Assing - 21 Nov 2006 18:12 GMT

You can't use a socket, unless you cut the wire.

They make a special offset box wrench for it; but you may be able to use an open
wrench.

You'll definately want to lower the exhaust a bit.

> Can anyone tell me if I need a special "split" or "slit" socket (22 mm)
>to replace the O2 sensor in a 1995 325is? Or will a normal one work on
[quoted text clipped - 3 lines]
>
>Mike

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Smash - 22 Nov 2006 04:40 GMT

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.

> Can anyone tell me if I need a special "split" or "slit" socket (22 mm)
>to replace the O2 sensor in a 1995 325is? Or will a normal one work on
[quoted text clipped - 3 lines]
>
>Mike

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