010378 Enhanced Fuel Rail and Injector Cover Kit Fit for 1997-2004 Jeep Wrangler TJ Grand Cheokee WJ XJ 4.0L Engine Fuel Rail & Injector Heat Shield Kit

Installed it fairly easily, it does not come with instructions but it does have photos of how it is supposed to be installed on Amazon.The manifold insulation slips in place fairly easily, you will have to remove the wiring harness because it sits on one of the studs that is used along with the throttle cable bracket.The fuel rail is where I knocked it down one star, it fits but is not perfectly cut so you will have to work it on. I put it on the rail brackets first then the fuel nipple then the Schrader valve then over the injectors connectors.After you reconnect the fuel rail with the injectors, use Vaseline to get them to slip in the rail and block easier, wrap the injectors with the sleeves.Overall this is the cheaper one I have seen, it will work. I know that there are people that question if it will last, it should it feels sturdy enough for what it is.As for functionality, it will prevent the fuel from vaporizing and keep the engine from misfiring, hesitation, and maybe… Increase mpg. I’ll update in a few months when I see if it helps.