•  Consists of a pressure regulator, fuel pump, fuel reserve cup, and fuel filter (low-pressure).

•  A pressure regulator is built-in due to the adoption of a returnless fuel system.

•  The fuel pump unit cannot be disassembled.

•  If the return pressure exceeds a given value, the relief valve activates to discharge fuel into the fuel pump unit. As a result, return pressure is maintained at the specified value or less.

•  Built into the fuel pump unit due to adoption of a returnless fuel system.

•  Cannot be removed because the pressure regulator and fuel pump unit are an integrated construction.

•  Consists of a spring and diaphragm.