When replacing the headlights on your Freightliner Century 112 or 120, itâs important to make sure they fit your truckâs specific model year since designs can vary. You can stick with stock headlights or upgrade to LED or projector-style options if you want better brightness and style. For a hassle-free installation, check out our âplug-and-playâ designs. We carry DOT-approved replacement headlights here at 4 State Trucks, so youâre in the right place! Got questions? Our friendly Parts Pros are always ready to help.