Your original damper was a 3860981 which Volvo Penta superceeded to a 3884460 which is no longer
manufactured by Volvo Penta. I called Volvo Penta and they had no recommendations.
What we have done in the past is to replace your round coupling with a ZF Marine gear coupling which is sort of
star shapped. It looks a little different, but it fits on your flywheel and the gear will connect properly (remember
ZF marine gear bought out the Hurth gear company in 1996).
In the attached quote I supplied you with a ZF Marine OEM damper and an aftermarket one that Crusader offers.
I think the Crusader one is probably OK, but since it is such a hassle to replace these I would be tempted to go with the ZF one.
Thank you and please don't hesitate to contact us if you need any more information or would like to place the order
for one of these.