Ford Powerstroke Diesel Forum banner


  1. General 6.0L Discussion
    Whats up everyone? I just have a simple question. I have a 04 ford f250 that I bought used. Its obviously had some aftermarket parts added like rail mounts from a big lift, egr delete, aftermarket wheels, k&n air filter, etc. Anyways my question is, right under the fuel filter it has a black...