Update your semi with improved visibility in foggy conditions, with the Dorman 4.3" Round Halogen Fog Light Assembly that ensures you're Ready for the Road Ahead™. With a wide-spaced pattern, this replacement light is ideal at cutting through fog while reducing glare and water reflection. Crafted with an easy-to-install design with a pre-installed bulb. FleetPride is your First Click in Heavy Duty®.