Cadillac Catera and Cimarron Forum Discussion, 2001 catera engine intake metal clamp needed? in Past Cadillac Vehicle Discussion; Hi, see picture:
I am missing that metal clamp (I believe previous owners removed it) where do I get ...
The absolute cheapest fix,~$2 at any parts store, ask for a radiator hose clamp. Either measure the diameter of the intake ducting, or remove the other one and take it into the store with you. They should carry one large enough. If the ducting has rubber alignment tabs for the original clamp, carefully trim them off (don't cut through the duct).
If for some reason you can't find one large enough, grab one at a salvage yard, or worst case scenario, get one at the dealer. It won't be that expensive.