Just had my front nearside wheel bearings changed on my LH107 2.8L 4WD Hiace super custom - the ones that the motor factors stock and swear are correct for these vans are not correct (I bought a set and so did the garage from different suppliers - both wrong, too small!)
The garage then took the old bearings out and went to a local bearing supplier - turns out the bearings and seal are standard items.
The numbers for the two bearings (inner and outer for one front wheel) are:
And for the seal:
These are available from Toyota but they want about £200 for the set! - from a local bearing supplier they cost about £60!! (and it doesn't take 2 days to get them - they were on the shelf)
Hope this helps someone