Ford 5.4L 4.6L Cam Phaser Engine Variable Timing VVTi Actuator + Bolt 3V 24V 3R2Z6A257DA, 3L3E6C524FA Precision-machined for accurate, dependable operation Meets or exceeds OEM performance requirements Utilizes the latest in design and material technology, ensuring quiet and maintenance-free experience Replaces OEM 3R2Z-6A257-DA, 3L3E-6C524-FA, 3R2Z6A257DA, 3L3E6C524FA Replaces Dorman 917-250