2 PCS Front Left & Right Door Lock Actuator For Excursion F150 F250 F350 F450 F550 Super Duty 6C3Z-2521812-A 6C3Z-2521813-A This package includes 2 door lock actuators, one for the front left door and one for the front right door.The actuators are designed to fit vehicles requiring part numbers 6C3Z-2521812-A and 6C3Z-2521813-A.Compatible with EXCURSION models from 2000 to 2005, models from 2005 to 2008, F-250 SUPER DUTY from 1999 to 2008, SUPER DUTY from 1999 to 2008, F-450 SUPER DUTY from 1999 to 2008, F-550 SUPER DUTY from 1999 to 2008, F-650 models from 2000 to 2003, F-750 models from 2000 to 2003, and MARK LT models from 2006 to 2008.The actuators are built to restore proper door locking function and integrate into the existing door mechanism.