I'm trying to get the sending unit out of my '85 300SD. A 42mm socket is too small, and I ordered it so I could do the job.

Does anyone know what size socket to use for this job? I tried just using some channel locks, but the body of the car raises up around the top of the unit making it impossible to get locks in there and grip it. The only opening I have to access the unit it behind the back seat through an opening in the body.

Any feedback anyone has would be awesome! I've had the backseat of my car in my living room for a week now waiting on the 42mm socket to arrive in the mail, and to my surprise, it doesn't fit.

I couldn't find a thread that shows any steps or socket sizes for removing the fuel sending unit from a w126.

Thanks!