SOLDI have 2 extra couplers 4" ID x 3" long.
They are 3 ply polyester reinforced rated at 350 degrees and 10 psi.
I used 1 to connect a 4" tube to my MAF.
These are not the more rigid 4 ply kevlar 150 psi type.
I had no problem getting it to conform to the slightly smaller MAF and the approx 25 degree bend.

1 coupler and 2 clamps $15 shipped or both for $25

 

Added installed pic

 

I'll have to measure to be sure, but I may take them. In the third pic you have up there, it looks like the two ends are mounted to different diameter pipes....will these stretch and/or shrink to fit?

 

"These are not the more rigid 4 ply kevlar 150 psi type."
"I had no problem getting it to conform to the slightly smaller MAF and the approx 25 degree bend."

Yes they are fairly flexible.
I have worked with the stiff ones before, these are much more pliable.
The MAF is about 3.75" and the Alum pipe is 4" ID = about 4.125 OD.

 

OK I'll measure tonight and see if that will work for me, if it does I'll take them.

 

I need one end to go over a 4.5" pipe and one to go over a 4" TB. Think it will work?

 

I'll check today and let ya know.

 

Thunder,
Yes they will fit over a 4.5" OD.
I had to muscle it a bit, But I did not use any type of lube. A little water should make it easier.
I thought it might deform like a rubber radiator hose will when you force it onto a larger fitting, but it did not deform, the reinforcing threads were not pulling away from the edge.

IMO they will work fine on 4.5". I pushed it on about 1 inch, plenty to safely clamp onto.

 

Good deal. Sent you a PM, I'll take them both.