No need for part numbers, names are suffice.
1.Phillips X-Tremes or
2.Osramn Night Breakers. Note in H4 bulb spec.
Now a cheaper alternative would be the Phillips Rally Bulbs which I have mentioned in the thread I gave a link to, they will cost about Rs.500 for a pair and will almost give double the output of your stock bulbs(The color temperature will be the same as stock)