H4 (3 pin bulbs) fitting. XENON HID UPGRADE KIT. Unique Bi-Xenon kit gives Xenon HID light when on High and Low beam. Replaces standard halogen headlight bulbs with XENON HID BULBS. (XENON HID is the Pure white lights used in the new AUDI, BMW, RANGE ROVER, LEXUS ETC).
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