For 2005-2014 Ford Expedition V8 5.4L. For 2004-2010 Ford F-150 V8 5.4L. For 2005-2010 Ford F-250 Super Duty V8 5.4L. For 2005-2010 Ford F-350 Super Duty V8 5.4L. Throttle Body 1. Regulate the flow of air into the engine, which is crucial to the fuel and air mixture for the engine.
