This ECM wiring harness is a great fit for your Cummins diesel engine, whether it is M11, QSM, or ISM. The black color of the harness will blend in nicely with other components in your engine bay, and it is a unit type part that is made in China. With a unit quantity of 1, you can be sure that you are getting exactly what you need for your vehicle. The manufacturer part number is 3406879X, so you can easily search for this harness online. It is a high-quality part that will ensure the proper functioning of your engine, and it will help you avoid any potential issues with the wiring. Buy this harness now and take your vehicle to the next level of performance!