Kit Includes: 2x Front Wheel Bearing Hubs Assembly - 515079 Hub Specifications: Position: Front Left and RightLugs: 6 BoltsDrive Type: 4WDABS Type: Sensor WireFlange Type: 4-Bolt Square Fitment: ***FITS 4WD MODELS WITH 6 LUG ONLY*** Replacement for 2004 Ford F-150 (4WD; 6 Stud)Replacement for 2005 Ford F-150 (4WD; 6 Stud；Built Before 11/29/04 Production Date)Replacement for 2006-2008 Ford F-150 (4WD; 6 Stud)Replacement for 2006-2008 Lincoln Mark LT (4WD; 6 Stud)Replacement for 2003-2006 Ford Expedition (4WD)Replacement for 2003-2006 Lincoln Navigator (4WD) Tips: Abnormal Noise: The noise from the hub bearing indicates that your bearing may be faulty and needs to be replaced.Abnormal Fuel Consumption: When the fuel consumption is abnormal, it is recommended to check whether the wheel resistance torque is normal and determine whether it is a bearing problem.ABS Lighting: If there is no problem with the braking system, the bearing may be installed incorrectly or damaged.Steering Wheel Vibration: Abnormal wheel hub bearings can cause steering wheel vibration.Since the working conditions of the front wheel hubs that cause the bearing failures at both ends are similar, even if only one bearing is damaged, it is recommended to replace them in pairs for safety reasons. Easy Installation The assembly performance is excellent, the overall structure is precise, and the installation is convenient. Premium Bearing Steel Detroit Axle hub bearings use high-quality bearing steel, which makes them have extremely high wear resistance and rust resistance. At the same time, high stiffness can extend the life of the product. High-Frequency Quenching Process Detroit Axle strictly control the ratio of wheel hub bearing materials and obtain the best performance through the high-end heat treatment process and high-frequency quenching of the product. High Performance Detroit Axle parts are manufactured by OE Standard to meet expectations for assembly, shape, and function, providing high quality and high value.