BBK's 80mm throttle body is specified for 2004–2006 Ford F-Series and Expedition 4.6L engines. As an 80mm billet-series throttle assembly, it is sized and machined for those engine applications and intended to replace the factory throttle body. The listing describes a vehicle-specific billet throttle body option for the stated 4.6L applications.
BBK 04-06 Ford F-Series/Expedition 4.6L 80mm Throttle Body