Description: The Ford F-150 Control Module (8L3Z-2C219-A) is a factory-original 4WD or transfer case control module for 2004–2008 F-150 and Mark LT, covering 2WD, 4WD, and post-July 17, 2006 production configurations. This genuine Ford OEM module manages four-wheel-drive engagement and mode selection with factory-calibrated logic, a direct replacement requiring programming to the specific vehicle.