RCI EFI In-Tank Pump-Ready Aluminum Fuel Cells are Tig-welded and made from a strong, lightweight, 5052 aircraft aluminum alloy. They come with a 12 bolt heavy-duty aircraft-style flush mount lid assembly, #8 AN fuel return and rollover vent fittings, and are available in your choice of natural aluminum or powder-coated black. 20-gallon capacity. Flush-mount fill cap. Universal 16 bolt fuel pump compatibility. AN8 fuel return. AN8 rollover vents. 24.00"L X 20.00"W X 10.00"H. Natural Aluminum.