Metal Xenon HID Holder / Base Ring — D1S, D2S, D3S This metal lock retainer clip is designed to secure D1S, D2S and D3S xenon HID bulbs in projectorstyle headlamps, especially during BMW projector headlamp refits. It replaces worn or broken plastic retainers and provides a stronger, more reliable connection between the bulb and the headlamp housing. Key benefits Secure bulb retention: prevents unwanted movement, rotation or loosening of the HID bulb that can cause beam misalignment, flicker or uneven light output. Durable metal construction: more resistant to heat, wear and deformation than typical plastic clips, extending service life in temperature headlamp environments. Clean, lowprofile finish: black coating matches most headlamp interiors and provides a neat professional appearance after installation. Simple retrofit solution: designed for use when converting or repairing projector headlamps where original retainers are missing or damaged. Main features and attributes Compatibility: fits standard D1S, D2S and D3S xenon HID bulb bases. Intended for use with projectorstyle headlamps commonly found on BMW vehicles undergoing HID refit or . Material: metal construction for strength and improved heat tolerance over plastic alternatives. Color: black finish for discreet integration into headlamp assemblies. Function: acts as a holder/base ring and locking retainer clip to secure the bulb in the correct position for beam pattern. Performance: maintains stable bulb positioning under vibration and thermal cycling to preserve beam alignment and consistent light output. Use cases Replacement of broken or missing retainers during a BMW projector HID retrofit, restoring proper bulb positioning and preventing seal gaps. Upgrading from brittle plastic clips after repeated bulb changes or heat operation to a more durable metal retainer that reduces maintenance frequency. and maintenance for vehicles driven on rough roads where vibration can loosen standard retainers, helping keep beam aim consistent and lighting reliable. Installation and notes Designed to fit standard D1S/D2S/D3S bulb bases; installation typically requires basic hand tools and moderate mechanical familiarity. Confirm fitment with your specific headlamp housing and bulb type before installation. Retainer is a mounting accessory for secure mechanical retention and does not include bulbs, ballast, or electrical components. A practical, robust replacement for damaged retainers and a reliable choice for HID projector refits where secure, heatresistant bulb mounting is required.