MPI Marine Products 350-1120 Fuel Fill Hose 1 12 Since 2012, marine fuel filler hoses must meet stricter standards than before. If you are replacing your recreational crafts fuel fill hose, it is essential to have a fill hose that resists the detrimental and degrading effects of ethanol. Through prolonged use, this compounds properties can break down most hoses, as residual ethanol fuel blends usually remain in the hose after filling the tank. Sierra Shields marine MPI fuel hose resists ethanol