Welcome to the board.That is probably your fuel filter. What year Jeep do you have? If it is an older model, such as a YJ (95 and older), the small elbow hoses tend to crack and cause proiblems. There is a place that is covering this fuel filter. Simply take off the three bolts holding it and verify that the leak is coming from there. If so, simply go to your local parts store (sutozone) and get a replacement. It would be a good idea to take the hoses with you just in case they do not have the correct size on the computer. Go ahead and replace the filter whiole you are at it. Don't forget to get yourself a new set of clamps as well. Good luck and let us know how it turns out.-Al