The gas tank straps help to keep your fuel system in place which is important on vehicles that can spend some time off road. This Gas Tank Strap for the Wrangler TJ from Omix is a direct replacement for all factory gas tanks. If the plastic braces crack and fall apart it will allow the tank and skid plate to move up and down which could damage other parts of the fuel delivery system such as the sending unit or fuel lines. Straps are sold each, 2 are required.