Diesel Engine Computer Module ECM ECU 3408501 For Cummins ISM11 M11 QSM11. For Cummins ISM11 M11 QSM11 Diesel Engine Computer Module ECM ECU. 3408501, 3408501NX, 3408501RX, 4309175RX, 4309175NX. For Cummins ISM11 M11 QSM11. 1x Diesel Engine Computer Module ECM ECU. If you have any questions about the product or compatibility, Please leave a Message, we’d be delighted to hear from you. Thank you for your understanding and support. Please feel free to shop with confidence. However, rest assured that we will respond to all emails as quickly as possible, including on weekends, once we see your message.