DEI Fuel Rail and Injecter Cover Jeep 1997 - 2004 4.0L EngineWe have come up with a solution for a common heat soak & vapor lock problem in Jeep models with inline 6 engines (1997 2004). DEI's Easy to install heat protection kit reduces heat soak on the fuel rail and injectors, in turn reducing vapor lock and keeping fuel cool. Fits 1997 2004 4. 0L Jeep models with inline 6 motor Reduces fuel rail & injector fuel temps Reduces chance of vapor lock Protects injectors & fuel rail from engine heat Kit includes