hi
I know the rear wheel bearings are the same for the volvo 66, 343, 340 and 360
volvo OEM were SKF bearings (bit of history there too!) and are still available from SKF. fortunately, there arent complex bearings with carriers etc so aftermarket versions arent difficult to source.
the hassle with all this is that whilst you can get parts, its not so easy as calling volvo and the part coming the next day
companies like nordic are picking up the baton for after-volvo parts and genunine classic parts (volvo has a holding is this company and helped set it up, still works closely with etc before ford bought volvo in 1999) also supply
however, just as when this website was started, the 2,7,9 and 8s plus 120, 1800,140s etc all have good support, the 300 series doesnt have such a following so less swedish companies etc supply parts.
as discussed before, this website is a good place for posting alternative part and their supply
just need to get an advert in every dealer so we really get noticed!!
work of people like Dai and Mac is just EXCELLENT!