Fuel Level Switch and Diagnostic Indicator by Radium. Designed with big speed fans in mind, this mind-blowing fuel system upgrade will help you maximize engine performance and fuel efficiency. It’s easy to install and will help you achieve better combustion and uncork the power hidden under the hood. Offering a win-win combination of the finest materials, precision engineering and innovation, this performance fuel system part delivers hardcore strength, long-term dependability, and outstanding operation