The part number is D9ZZ-17A385-A for the '82, replaced in '83 with E3ZZ-17A385-A.
I just checked and there appears to be a bunch of the older, D9ZZ. I'm glad you asked me to look, because I've been using the '83 number and haven't ever found any online. There is one listed at Green Sales for the E3ZZ, but I cut and pasted the search for the D9 below.
Let me know what you end up finding price-wise....I still need one more.
