Motorcraft Diesel Glow Plugs are engineered to meet strict Ford engineering standards to provide original equipment performance and reliability Product Features:Backed by the Motorcraft Service Parts WarrantyMotorcraft Glow Plugs are engineered to provide original equipment performance and reliabilityAll Motorcraft Ignition part designs undergo rigorous lab and real world tests in order to meet Ford engineering standards.Engineered to tight tolerances to help provide excellent performance