The SD Racing Stage 1 Fuel Hose Kit is designed to work with all aftermarket top feed fuel rails available for the EJ engine and utilize an OEM fuel pressure regulator. The kits come with pre-assembled hoses compatible with gasoline and ethanol fuels in either black nylon braided, black red nylon braided, or black blue nylon braided, a new OEM fuel pressure regulator, hardware, and intake manifold gaskets. This is the most comprehensive fuel hose kit you can get for your aftermarket top feed fuel rails!Why are SD Racing Fuel Hose Kits the Best Choice for your EJ Engine?As power levels increase, so does the demand on your fuel system. SD Racing Stage 1 Fuel Hose Kit allows for increased fuel flow to ensure each injector gets the fuel it needs. Just add a set of COBB, IAG, or any other top feed fuel rails, and a fuel pump to your order for a complete fuel system upgrade to meet the level of performance you demand!