Phil:
Mesa Performance's WWW catalog lists them for 325iC thru 92 convert, top
hatch, with a slightly different part number of 51 25 1 932 333 at
$52.50.
http://home.earthlink.net/~mesa
I bought two of these from Mesa about a year ago for my brother's E30, and
they worked fine.
Best,
Jeff
BMW ACA / CCA