Klopp’s side have an eight-point lead atop the Premier League as they target a first English title in 30 years and can add another trophy to their cabinet before the year ends.
Louw, who came off the replacement bench for captain Siya Kolisi in the 32-12 victory over England in the World Cup decider on 2 November won 76 test caps having made his debut in 2010.
Thousands of fans lined every street as the special open-topped bus slowly rolled past colourful, cheering supporters, some with flags and others with posters.