H1, H4 all those are codes for the base/bracket for fixing your bulbs in your headlamp.
Tips: If your Lo and Hi beam is on the same bulb most likely it would be H4 type.
Here are the list for H4 bulbs
Proton Wira/Satria/Gen2/Putra
Perodua Kelisa/Kenari/Kancil
Hyundai ATOS/Accent
Honda Jazz, Civic EJ / EG and even the new type civic
H1
Proton Waja
Nissan Sentra (New type)