The two-time defending champions have beaten the Jaguares 19-3 in the final in Christchurch, despite the Argentinian side having the greater share of possession and territory.
Crusaders hooker Codie Taylor scored the only try of the match, while first-five Richie Mo'unga kicked four penalties and a conversion.
Captain Sam Whitelock spoke of his immense pride in all of his players after being handed the trophy for the third straight season.
