This is a complete kit that mounts on an existing bracket on the inside of the frame rail of 03-07 dodge cummins. Also includes and additional bracket for relocation. It utilizes a 2 micron fleetgaurd filter and a fleetgaurd water separator, not a gravity feed like the stock set-up. It has virtually no flow restriction and mounts above the skid plate. This filter kit can save thousands of dollars in failed injectors, injection pump, fuel log, and cross over tubes.