(REQURIED IF NOT USING TOOLBOX) Transfer Flow Cover Plate for 40 Gallon Under Tool Box tank Model 0400117477Transfer Flow Cover Plate for 40 Gallon Under Tool Box tank Model 0400117477 If you prefer to use our 40 gallon under tool box fuel tank without an optional toolbox, this cover plate protects the fuel tank's fuel pump, sending unit top plate, and rollover valve. Our team knows the Transfer Flow catalog inside and out. So no matter your application, we can help you pick out the perfect tank setup. Elite Truck was founded by a diesel mechanic, and that