Why do the bulbs in my XenonDepot HID Conversion kit not have any Philips markings?
Philips D2S/D2R bulbs come with a P32D base. This is where all the Philips markings are found. This base gets removed in order to accomodate a custom moulded halogen base so that the product can be used in halogen headlights. These custom moulded bases are laser aligned to ensure optically correct beam patterns. A Philips bulb can be easily recognized though by the design of the burner. Philips HID bulbs have a uniqe shape to them.