1、Applicable Model: The plugs fit for Duramax L5P 2017 to 2019, will go in place of the NOX And DEF Module, the looped wires will provide a closed signal back to the ecm for proper operating. 2、ABS Material: Plugs are made of ABS material for long lasting durability and are designed to withstand harsh operating conditions such as exposure to extreme temperatures, vibration and moisture. 3、Easy Installation: The installation of the plugs is relatively simple, the plugs are usually located near the ECM, and the installation includes connecting them to the ECM and the appropriate ports on the vehicle CAN bus. 4、Connect Function: The CAN bus plug provides the critical link between the ECM and the vehicle CAN bus, enabling the vehicle's various systems to communicate effectively and ensuring optimum performance and fuel efficiency. 5、High Reliability: These plugs are manufactured to meet stringent quality standards, strictly follows the factory quality control, can be used for a long time. Item Type: CAN BUS Plug Material: ABS Usage: Plugs will replace NOX and DEF modules. The looped wires will provide a closed signal back to the ECM for proper operation. Fitment: Replacement For Duramax L5P 2017-2019 4 x CAN BUS Plug