HYUNDAI ACCENTThe make and model of the vehicle.0261S18817The Bosch part number for the ECU hardware.This is the specific hardware module number. The full Hyundai OE part number, which was in the previous listing, is likely 39110-2BRH5.MEDG17.9.8The ECU software/system type.This is the Bosch engine management system (ME/MED/MEDG17 generation) used in this vehicle, confirming the need for specialized programming.