Convertible Rear Armrests

If your armrests snap in with tabs (spring metal) I would recommend that you have them built with a more flexible steel then what they use for the 67 to 69 dart rear convert arm rests.
I bought a set and one of the spring tabs snapped before it got into the slots (and yes I do know how to install them, I have had the OEM in and out many times)

This is OEM

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They replaced the part, which was great. Trouble is the replacement did the same thing.

I ended up making my own clips from mild steel and haven't had any troubles.

My clips on ABCs part
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My belief is the spring steel they are using is just too brittle, doesn't allow for enough flex before the metal is past it's elastic limit.

Just my 2 cents