Pacer Clint McKay (5-28) helped Australia beat Sri Lanka by 16 runs in the deciding match of the three-game triseries finals to win the CB series.
Sri Lanka named an unchanged team while Australia brought in Peter Forrest and Nathan Lyon for the deciding match of the best-of-three triseries final.
A rejuvenated Sri Lanka would look to exploit the injury problems and bowling woes of Australia when the two teams clash for the title in the third and last final of the triseries on Thursday.
Riding high on brilliant knocks from Dilshan and Jayawardene, Lanka thrashed Australia by 8 wickets in the second final of the tri-series at Adelaide.
Australian captain Michael Clarke won the toss and chose to bat against Sri Lanka in the second final of the triseries at the Adelaide Oval in Adelaide.
Just a step away from clinching the title, Australia will be hoping to seal the issue on Tuesday when they take on Sri Lanka in the second triseries final.
Explosive opener David Warner is doubtful for the second final against Sri Lanka on Tuesday after injuring his groin during his career-best 163-run knock in the first final on Sunday.
Led by David Warner's gallant 163, Australia took 1-0 lead in the three-game finals as they beat Sri Lanka by 15 runs in the first final of the triseries at Gabba.
Australia and Sri Lanka will battle it out in best-of-three finals with the spirited islanders well-equipped to upstage the hosts in the triseries summit clashes.
India were finally knocked out of the triseries as Sri Lanka brought a heart-breaking end to their nervous wait with a nail-biting nine-run victory over Australia.