Feature: 1. Applicable Models: ECM diesel engine computer controller module is fit for Mark D13 FM13 Truck. Please confirm whether your model is applicable before buying. 2. OE Number: The part numbers of reference are 21358126, 21042371, 21300060, 21107008, 20977021, and 20583789, please confirm whether it is consistent with the OE you need. 3. Strong Expandability: The engine computer controller module has rich functions and interfaces, which can be communicated and integrated with other vehicle systems (such as transmission, ABS, car entertainment system, etc.) to realize the intelligent control of the vehicle. 4. Protection and Anti Interference: ECM engine controller module adopts accurate hardware components and efficient software algorithms, which has strong anti interference ability and high reliability, and can work normally in the harsh working environment. 5. Adaptive Control: Diesel engine controller module has an adaptive control function that automatically adjusts the engine's operating state according to different driving conditions and environments to ensure optimal engine performance. Specification: Item Type: ECM Diesel Engine Computer ModuleMaterial: Aluminum alloyOE Number: 21358126Other Part Numbers: 21042371, 21300060, 21107008, 20977021, 20583789Installation: ReplacementFitment:For Mark D13 FM13 Truck . Package List: 1 x ECM Diesel Engine Computer Module Note: 1. Please double check the part number of your item, matching information is for reference only.2. It is recommended to find a professional auto mechanic to install3. Product installation should pay attention to, first check out the reasons for the previous computer board bad, to avoid using the same failure to burn the computer board again. 4. Before installing the computer board to check whether the voltage is normal (circuit system normal operating voltage, do not exceed 3V variation), check whether the line is normal, the laptop is good, otherwise there is a possibility of burning the computer board.5. After installing the computer board (plug in the plug for trial operation) key to NO position switch back and forth three to four times before starting