Your search for the best outboard motor gas tank just ended. The Scepter Neptune Portable Marine Gas Tank outperforms ordinary outboard motor fuel tanks thanks to superior construction and true boater-inspired features. UV-stabilized, high-density polyethylene brings outstanding durability and unbeatable product life, and the seamless 1-pc. shell ensures rugged dependability you wont find on imitators boat fuel tanks. The Scepter Neptune Portable Marine Gas Tank meets CSA standards and sports Scepters industry-leading manually vented marine cap. The fuel pick-up accepts the standard 1/4 NPT marine fitting, completing this Scepter gas tank as the go-to choice for pros and seasoned enthusiasts alike who dont compromise on safety or quality. Sizes: 3 gal., 6 gal. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Fuel Tanks.