Originally Posted by
jonse
Some Gen III's are thick enough at the top to have grooves cut for a retaining clip.
As I said earlier I don't know the retaining mechanism in the Disco, however I do know that, if not retained in the fuel rail, in the 928 and in some BMWs the injector can move down far enough into the intake to unseal it from the fuel rail with potential catastrophic results. So Best to check if this can happen on a Disco.
I'ld hate to think that I knew of this possible issue (May not be an issue but I don't know) and someone installed these injectors and ended up loosing a Disco to a fire or worse.