No the hose from autozone was the same diameter throughout. but note, the diameters of the block pipe and water pump outlet are not that much different and not sure if the accuracy of hose diameters have to be that accurate to work.

In general, the key is to use 3 clamps instead of two. one on both sides, and one in the middle, over where the gap is.

__________________
1990 Mercedes 300 SEL (320,000 miles)
1994 Mercedes E420 (140,000 miles)