Cummins 3347905 Electronic Fuel Control Actuator

The Cummins 3347905 Electronic Fuel Control Actuator (ETR) is an electromagnetic rotary solenoid valve mounted on the high-pressure fuel injection pump. It receives pulse-width modulated signals from the Engine Control Module (ECM) to precisely meter fuel flow into the pumping chambers, controlling common rail pressure across the operating range. This component is critical for achieving target emissions standards and transient response in heavy-duty diesel applications. Constructed with high-temperature resistant solenoids and hardened steel internal components to withstand continuous exposure to pressurized diesel fuel up to system maximum rail pressure. The actuator features a sealed electrical connector interface designed for harsh under-hood environments. It serves as a direct replacement for OEM part numbers 3347905 and Komatsu 6560-41-5100, compatible with CM2250, CM2350, and CM500 control systems.