Colombo: Sri Lanka clinched their first series whitewash over a major cricketing nation Wednesday as they won the third and final Test against Australia by 163 runs, with spinner Rangana Herath taking 7-64.

Set a formidable target of 324 in their second innings at Colombo's Sinhalese Sports Club (SSC), the tourists were all out for 160 following a batting collapse in the afternoon session.

It was the third time in a row that the tourists had lost all of their Tests in away series against teams from the sub-continent.