This repair is for the turbo water hose off my 2000 VW Passat and would not be recommended for hoses conveying really high pressures.
Step 1: Bad hose
Once the hose failed, it emptied the entire contents of the cooling system in a matter of seconds, and there was no getting home. I quickly found this was a dealer/internet-order only part and the dealer was asking over $120. I couldn’t justify paying that much for a hose!