Ensure your truck is prepared for the long road with properly-sealed light fixtures, with the OTR 6" Right Angle Marker Clearance Plug with Expertise Built In. To prevent water, debris, or other contaminants from damaging a light housing, this replacement device covers the entry to bar passage. Fashioned with top-tier materials to endure extreme environments and rough conditions. FleetPride is your First Click in Heavy Duty.