Wehrli Billet ORB Fill Plug for WCFab Rear Differential Covers - Black Anodized

Replacement Billet ORB Fill Cap for WCFab Duramax/Cummins AAM 11.5" Rear Differential Cover (WCF100113) and 2020-2024 GM 2500/3500HD & 2019-2022 Ram 2500/3500 Rear Differential Cover (WCF100114). Available in your choice of Black Anodized or Clear Anodized finish.