881 XTreme White Plus Twin Pack Halogen Bulbs The 881 Xtreme White Plus Series of high output replacement bulbs give drivers better color recognition, depth perception, and improved contrast over stock halogen bulbs. Xtreme White Plus bulbs feature a crisp white light output that allows for better road illumination, while a blue top coat adds style to your vehicle with the Xtreme White's 4000k color temperature.