A toolbox supporting transfer fuel tank is provided. The transfer fuel tank includes a tank body comprising a vertical portion and a toolbox supporting portion, the tank body having an inner volume, a fill tube coupled to a top surface of the tank body and at least one baffle support extending from a side of the tank body into the inner volume of the tank body. The transfer fuel tank may also include a pickup tube support formed in a bottom surface of the tank body and a strengthening channel formed in the top surface of the tank body to provide rigidity to this area of the tank body to support the transfer pump. The transfer fuel tank may further include at least one lower baffle extending from a rear surface of the tank body and contacting the toolbox supporting portion of the tank body.

An in-tank fuel pump assembly and mounting system is disclosed which may be configured for mounting inside a fuel tank. The assembly includes a pump housing, pump mounted to the housing, and pressure relief valve. The housing may comprise upper and lower pump housing units coupled together. The upper housing unit is configured for mounting to a tank opening, which in one implementation may be the fuel fill opening. The lower housing unit extends into the tank to approximately the bottom of the tank. A fuel fill fluid pathway is created through the housing for adding fuel to the tank while the pump assembly remains in situ. The upper housing unit may include a removable fuel cap. The pump housing may include an integral vapor trap.