The Zone Offroad knuckle component box for 2021 Ford F-150 specifies passenger-side knuckle parts for that model year. This knuckle box supplies the passenger-side (PS) kit segment used during front suspension modification and pairs with the driver-side box and other kit pieces to complete the front-end work on supported 2021 F-150 models.

Zone Offroad 2021 Ford F-150 Knuckle Box Kit - PS