This Electronic Control Module (ECM) is designed to fit Cummins Diesel Engine models M11, QSM, and ISM. It is a high-quality replacement part with OE/OEM Part Number 3408501X and Manufacturer Part Number 3408501, manufactured in China. This ECM is essential for the proper functioning of your engine's electronic systems, including fuel injection, ignition timing, and emission controls. It is an excellent choice for those looking to replace a faulty ECM and restore their engine's performance.