Product Details: Update your semi truck's brakes with reliable protection against dirt, debris, and other contaminants, with the Meritor 16.50" P / Q Series Dust Shield that ensures you're Ready for the Road Ahead™. Thanks to its straightforward design, this replacement shield is able to help prevent unwanted contaminants that could cause damage or noise from coming into contact with the brakes. Engineered with an easy-to-install assembly for rapid repairs. FleetPride is your First Click in Heavy Duty®.