Noise Isolators
WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Noise isolators (14) are used on the six high-pressure fuel lines. They should be positioned in the middle of the horizontal or longest straight section of each fuel line. The split on each isolator should be facing downward. Be sure the noise isolator is not touching another isolator or any other components.