Topside tanks designed for todays highly corrosive ethanol fuels. Weve revolutionalized the marine industry standards for topside tanks above 12 Gallons, providing engineering that looks and performs better than any other fuel tank in the business.Provides positive seal with Moeller-exclusive injection molded 2 1/4" fill neckMechanically vented fuel cap ensures easy gripping with exclusive ribbed design that floatsFeatures 90 Degrees, 1/4 NPT fuel withdrawal elbow that rotates 360 Degrees eliminating a kinked fuel line hoseIncludes mechanical direct-sight gauge with easy-to-read indicatorTested to industry standardsOk for use with ethanol based fuels