Cummins 3680509 Engine Control Module ECM for QSM11 / ISM - Used

Application: Cummins QSM11 / ISM marine and industrial diesel engines using the CM570 control platform. Cummins OEM Engine Control Module (ECM), P/N 3680509, S/N 7005373, ESN 34958141, D/C 04291999, E/C L20084.05. Condition: Used take-off, tagged 'Good 10/24' from prior inventory check; connectors and housing in clean, serviceable condition. ECMs are engine-specific and will require flashing/programming to your ESN and calibration by Cummins or a qualified ECM shop before use. Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase. Used marine part sold as-is unless otherwise stated. No returns on electrical, used, special-order, or installed parts.