Features: 1.Compatibility: L5P CAN bus plug is replacement for Duramax diesel engine, and will replace the for NOX and for DEF modules. 2.Wires Design: The looped wires of bus plug will provide a closed signal back to the ECM for proper operation, and guarantee the high reliability. 3.Application: Bus plug is used for aftermarket exhaust systems that require a new calibration of the engine, and bring you professional use results. 4.Durable ABS: The bus plug is made of excellent ABS material, which has strong durability and ensures long time use without failure. 5.Easy Using: L5P CAN bus plug has a simple design, easy to install and maintain, saving time and efficiency, perfectly meeting your usage needs. Specification: Item Type: L5P CAN Bus Plug Material: ABS Description: Used replace for NOX and for DEF modules. Loop wire will provide a closure signal to the ECM to ensure proper operation Application: Replacement for Duramax diesel engine