This is a genuine OEM Ford Trailing Arm, part number F85Z-5A649-BA, designed for use with the EXPEDITION NAVIGATOR. It is a high-quality replacement part for your vehicle's steering and suspension system, ensuring optimal performance and reliability. The arm is made to fit perfectly and is compatible with a range of Ford models. Whether you're replacing a damaged or worn-out trailing arm or simply upgrading your vehicle's suspension system, this OEM Ford part is the perfect choice.