Sportal.co.nz 27.Oct.2013Getty Images
Western Province defeated the Sharks in last year's final and were looking to go unbeaten throughout the competition for the first time since 1936.
However, Allister Coetzee's men were unable to retain their title as Sharks scrum-half Charl McLeod claimed tries either side of half-time.
Pat Lambie kicked 23 points with the aid of two drop-goals, but missed a total of 11 points with the boot.
Despite his hit-and-miss display, Sharks still proved too strong against a Western Province outfit that struggled at the set-piece and crossed only once through Damian de Allende.
An action-packed opening to the match saw the visitors roar into a 10-0 lead inside five minutes before De Allende quickly responded.
Lambie opened the scoring with a penalty and McLeod then intercepted a pass and ran 65 metres for the game's first try.
De Allende hit straight back with a ninth-minute score from close range, but Lambie extended Sharks' lead when converting his second penalty attempt.
Sharks remained six points to the good at half-time, Lambie responding to two penalties from Demetri Catrakilis with a long-range drop goal and penalty of his own.
The two fly-halves exchanged three-point kicks at the beginning of the second period before Lambie offered another demonstration of his drop-goal prowess.
A penalty from substitute Kurt Coleman brought Western Province back in range once again but McLeod then claimed a decisive second try, scampering over from the base of the scrum.
By the time Lambie put over his sixth kick from the tee in the 79th minute, Sharks were able to celebrate their seventh title in the 121-year history of the championship.