5366. Front. Left.W/XENON HEADLAMPS W/DIRECTIONAL BEAM. Right.W/XENON HEADLAMPS W/DIRECTIONAL BEAM. Vent. A small valve, usually rubber or plastic in composition that allows moisture to Vent from the headlight housing. Headlight Housing Vent Tube. cover. pipe. Adapter seal. Breather Tube. Drain hose. Filter element. HEADLIGHT Assembly cap. HEADLIGHT Assembly insert. HEADLIGHT Assembly screen. Headlight Housing Valve. ILATION Membrane. Release Cable. Included with: Combination lamp, Headlamp Assembly, Signal lamp.