The product is a 2003-2005 BMW DME Siemens MS45.1 ECU Engine Computer specifically designed for the E46, E60, and E83 models with M54 engines. This OEM part is manufactured by BMW with the part number 12147548772, ensuring a perfect fit and reliable performance for your vehicle. As a crucial component for controlling the engine, this ECU helps optimize the vehicle's performance and efficiency, providing peace of mind for BMW owners looking to maintain the original factory functionality of their vehicle. Key and glove box handle included