NO LONGER AVAILABLE
https://www.ebay.com/itm/BMW-E30-E28-32 ... 1U&vxp=mtr
$80 + $70 for shipping.
Search german ebay for "anlasser" aka "starter".
I personally went with a Valeo Kit 835004 flywheel/pressure plate/clutch/bearing/bolts kit. Obviously have not gotten around to it but will soon.