Scrap that, it's not the bolt above because that's a cover for something else, so did the old intake have a fixing on it, you need to look at your old one to see if it had some thread on it in order to fit that bracket or look around there for a fixing, sometimes the hole in that bracket would be used to push a black plastic fixing into like a black plastic spreader threaded bolt whatever you want to call it, so it may be that the bracket was just held there with the tension of the fixings to it but given the thickness of bracket I would say to look for a threaded hole in the area or as I said on the old intake.