I have this question too.
VIN: YV1LS5106P2054355
ENGINE B5252S: 1289755"81468"
I've had to wait 3 plus months for the the water pump. Volvo said I needed an 8694626.
Picked it up today but the timing belt kit they have given me is the 144 tooth 9135032 (271835) belt in kit no. 30758262
The previous car owner left the old belt in a box which is the 139 tooth 3507652 - 5868
Can anyone make sense of all these numbers and tell me which is the correct one?
Any help appreciated. Car has been off the road for too long.