BMW Axle Diff / Differential (3.08) Front 31507578156

The OEM Axle Differential (3.08 Ratio) is a critical component located at the front of select BMW models, including the 550i GT xDrive (2011-2012), 550i xDrive (2011-2013), and 650i xDrive (2012). This factory-original part is integral to the vehicle's drivetrain, facilitating the transfer of power from the engine to the wheels. It enables smooth turning and stability by allowing differences in wheel speed. Common issues necessitating replacement include wear from extensive use, damage from road debris, or internal malfunction, leading to noise or a loss of traction. Alternative terms for the differential include final drive or axle assembly. The OEM part number for this differential is Bosch 7578156, ensuring compatibility and reliability in its function. Replacing the differential promptly can prevent further drivetrain issues and enhance vehicle performance.