OEM Dummy Plug
Part #: W302908
Oil rail plug, also referred to as dummy plug. (1 plug included, 2 required per vehicle)
If you want to check to see is this updated part or components thereof have been replaced already, you can pop the valve covers off and take a peek. The early dummy plugs require a 1/2" square drive. Updated dummy plugs use a 12mm allen wrench.
