Computer gasket. Left.HID. Right.HID. A component which prevents a leak at the High Intensity Light Ballast. A component which provides a sealing surface at the High Intensity Light Ballast. A seal that prevents oil from leaking out, or contaminants from enteRing the Headlamp Control Module. HeadLight Control Module Gasket. HeadLight Gasket. Part included in Headlamp assembly. packing. Computer o -. High Intensity Discharge (HID) Lighting Ballast Seal. Ler. Included with: Computer, Control assembly, Control Module, Headlamp, Headlamp Computer, Headlamp assembly Ballast, Headlamp assembly Computer, Headlamp assembly Controller, Lens & housing Computer.