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Plug & Play Siemens Engine ECU, SID 801A, 5WS40037D-T, 5WS40037DT, SW9650517780, HW9647423380 ECU Variant:Clone (Must ship faulty to us) Simply fill out our techThis OEM replacement ECU has been thoroughly tested by our in house technicians to ensure reliability. If you have any questions about its suitability for your needs, feel free to reach out, our team is here to help. At Cartech Electronics, we are committed to offering high quality, used replacement engine ECUs at a fraction of the cost of a new module from the main dealer. Depending on the variant you select, turnaround times may vary, please check
