Using this fuel distribution block is straightforward. First, make sure your vehicle is a 2003 - 2007 Dodge Ram 2500/3500 with a 5.9L Cummins engine. If you have an aftermarket fuel system, remove the factory fuel filter. Then, install the fuel block at the factory fuel filter mounting location. Connect the feeds, returns, and sensors according to the provided instructions. When it comes to maintenance, regularly check the gaskets and O - rings for any signs of wear or leakage. Also, keep an eye on the water in fuel sensor to ensure it's working properly. If you notice any issues, replace the parts as needed. Remember to follow all safety procedures when working on your vehicle's fuel system.