This is a reliable and original Engine Control Unit (ECU) for the 2019-2021 Honda Civic model. It is a direct replacement that would perform optimally on your vehicle. The unit's part number is 378205BBA54 / 378205BBA 54 / 378205 BBA 54, and it is an OE/OEM part. The ECU is listed as D78 and has an interchange number of 590-10719. It is a perfect fit for the Honda Civic and is located in NWAF8H2. The model comes with a tag number of 0000068446 and a stock number of 1702. You can rely on this ECU for optimal performance and control of your vehicle.