Vehicle compatibility: headlights assembly compatible with 1999-2006 GMC SIERRA 1500/2500; 2001-2006 GMC SIERRA 1500 HD/2500 HD/3500; 2007 GMC SIERRA 1500/1500HD/2500HD/3500 CLASSIC; 2000-2006 GMC YUKON / GMC YUKON XL; not fit Denali Model; high beam bulb type: HB3/9005; low beam bulb type: HB4/9006; bulbs are not included
Waterproof: fully sealed with solid silicon & designed with one-way vents to prevent moisture from being trapped inside the housing, no corrosion or moisture worries in sorts of weather conditions
Brighter lighting: the metallic parabolic reflectors provide more light output to create a broader and smoother beam
Safety reflector: the sided micro-prism reflector makes the oncoming cars or passerby quickly notice you at night, ensuring your driving safety and others'
Impact resistance: the polycarbonate lens & tough housing are highly resistant to shock, vibration for any tough road; professional installation would be highly recommended