7MN42M
ECU (Engine Control Unit)
Mack

The engine control unit (ECU) is a sophisticated electronic module responsible for managing engine performance, emissions, and fuel efficiency. It processes data from various sensors to optimize ignition timing, fuel injection, and other critical parameters, ensuring the engine runs smoothly and efficiently. A properly functioning ECU is vital for maintaining vehicle reliability, reducing emissions, and achieving optimal power output. It also plays a key role in diagnostics, helping technicians identify issues quickly and accurately. Upgrading or replacing the ECU can enhance engine responsiveness and fuel economy, especially in heavy-duty applications. Source One Parts Center provides high-quality ECUs designed to meet the demanding needs of heavy-duty trucks, ensuring your vehicle remains compliant and performs at its best.