009The 2003 Dodge Ram 5.9 Cummins ECM ECU CM846 P3963994 OEM is an engine control unit (ECU) manufactured by Cummins. It is designed for easy installation on the front of a vehicle with a 5.9 Cummins engine. The ECU requires programming and has a maximum amperage of 12A, making it suitable for controlling the engine's performance. Made of aluminum, this ECU is a genuine part with a 1-month manufacturer warranty, ensuring quality and reliability for your vehicle.