I just took my speedometer cluster to a speedometer repair shop today. The technician told me he has to custom-make the little plastic gear because they don't sell this part. He showed me a broken gear from another Volvo, it was really soft, like rubber. Just from looking at my cluster he guessed it was a 1994 Volvo 850. Perfect guess!!! Apparently he's been fixing a lot of these damn units. I guess Volvo just wants to sell us the entire instrument cluster. Anyways, the technician told me to pick up the unit tomorrow and it'll cost $65. It's a lot cheaper if you can take the cluster out yourself and take it to a repair shop.