The large hose coming from the air filter has a large hold in it & needs to be replaced. It is a part that can only be obtained from the dealer.
Air Filter Hose on 1998 Isuzu Oasis
With an older car, a salvage yard should be able to aquire that part for you. A new part from the dealer may be obsolete.
Good thought. You're probably right about that. Ewwwe...salvage yard? Me? Well, I gotta do what I gotta do, right? Thanx much!!