You can try dougrussell.com, they have a link to parts for the 125B and most are the same as an A model.<br />Just give them a call or ask here if there is a question about a specific part.
I have all sorts of parts for Volvo's. The AQ125A/B is no exception. Email your list & I'll get you a quote. If you need help, call me. I'm happy to help you keep the old boat running like a top.