Prepare your semi to be Ready for the Road Ahead™, with the Meritor 16.5" Full Camshaft Repair Kit for Meritor Q / Q Plus that offers reliable air brake performance. This repair kit tightens the internal components of a brake drum, allowing the camshaft to spread the brake shoes apart and create enough friction to slow a vehicle. Designed with precisely-engineered accessories to offer long-term dependability and wear resistance. FleetPride is your First Click in Heavy Duty®.