A direct, slide-in replacement auxiliary tank for Boston Whaler Montauk 15' & 17' consoles. Constructed of high-density polyethylene with a UV-stabilized resin, designed to withstand the effects of ethanol-blended fuels. Features a molded fill neck with side angle orientation for ease of access and Moeller's PL3 pickup design with a 360-degree swivel. Includes fuel cap with a sight gauge and vent. Fuel line assembly not included.