H7 is the correct fitment for the Mk4 Golf - but I think the bulb type is trying to be distinguished here.
130tdi - I believe you are correct - the bulbs provided with the kit are D2S which don't have the optical shielding in front of them - look close to the bulb and see if it has a black or dark grey bar running down it vertically. I was also worried about this as D2S are traditionally used for projector based lamps which have their own shielding, but the kit works great and providing you adjust the manual s elector to the necessary level you can get away with it. Also, you have to take into account that the bulbs once fitted have a cap that is fitted over them - check out your OEM halogen bulbs and you will spot the silver "hat" that sits over bulbs. This, I'm sure acts as the shielding to avoid excessive glare.
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