Those are for the spark plug wires to run through. Part# is 2B8491 I think it is sold by the cm.
Not the two tubes that support the intake manifold from the air cleaner?
As Stephen wrote. I had to build up the manifold area where one of them sat as it had been loose and had wallowed out
Support tubes for the air intake pipe. Part #5F8314. I believe they are just 1/4" trade size pipe.
Ok, I was thinking "tubes" not supports.