Which component contains a fuel level sending unit to determine fuel level?

• A. Fuel Pump
• B. Float Level Assembly
• C. Air Filter
• D. Throttle Body

Answer: (B)

Fuel level is measured with a sending unit that moves as the fuel level rises or falls. A float sits on the surface of the fuel and shifts a linkage, changing the electrical resistance that the gauge reads. The component that houses this mechanism is the Float Level Assembly, which includes the float and the sending unit. The fuel pump lives in the tank to push fuel to the engine, but it doesn’t measure quantity. The air filter and throttle body deal with air intake, not fuel level. So the Float Level Assembly is the part that contains the fuel level sending unit.