So a few months back I bought a used battery tray for my W123 300D. I did some research first and as far is I could tell, all W123's used the same battery tray. After having it sit around for a few months I finally sanded it down, cleaned it up and spray painted it black with the intention of installing it. I tried to install it yesterday and low and behold, it doesn't fit. Everything about the tray looks the same and the main two screws matched up fine but the the little arm that extends from the tray was about an inch shorter than the original tray that I had. I looked online and all the trays I have been finding have the longer, correct length arm. I'm not finding any info on the shorter arm version.

So my question is, did W123's have different trays? Is this for a different W123 model or year or is this tray from a something other than a w123? I must be going crazy because I'm almost positive that I pulled it off of a W123.

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