The DEI Fuel Rail and Injector Cover Kit is designed for 1997-2004 Jeep models with inline 6 motor and prevents heat related problems in the fuel delivery system. It reduces fuel rail and injector heat sink, reduces the chance of vapor lock, and keeps fuel cool. The easy to install kit includes one manifold heat shield, one fuel rail heat cover, size fuel injector covers, and 12 fuel injector O-rings. The heat shield is a glass fiber-backed heat barrier with thick aluminum skin. It reduces radiant heat from the manifold. The fuel rail and injector covers are a high temp glass fiber fabric with aluminized outer skin, designed to reflect engine heat away from fuel rail and injectors. The hook and loop design makes for easy installation.