These two had earlier scored tons in the first Test as well.
Here are the records scripted by the duo.
How did Day 1 of the Test match pan out?
Both Warner and Labuschagne troubled Pakistan at the Adelaide Oval.
Australia were 8/1 at one stage, before the two added 294 runs.
Warner was terrific and scored a 228-ball 166*.
Labuschagne went on to amass an unbeaten 126.
The two added 36 boundaries between them on a rain-hit day.
Pakistan were all over the place and failed to control Australia.
Brilliant Warner registers a hosts of records
David Warner struck his 23rd career Test ton and a second successive one in the series.
He equaled Justin Langer's tally of 23 Test tons.
The southpaw also raced to 6,778 career Test runs.
This was Warner's highest Test score against Pakistan.
He also raced to 915 career Test runs against Pakistan and smashed his fifth century against the Asian side.
Labuschagne is the highest run-scorer in Tests this year
Labuschagne had an excellent Ashes 2019 after replacing a concussed Steve Smith in the second Test.
He has continued in the same vein and amassed his second career Test century.
The Aussie batsman is now the highest run-scorer in Tests this year (793).
He has raced to 97 fours in 2019 and has the best tally after surpassing Smith (93).
Warner and Labuschagne's 294-run stand: Records scripted
Warner and Labuschagne's 294-run stand is now the highest tally for the second wicket against Pakistan. This is also the third-best partnership stand for any wicket against Pakistan by Australia. The partnership is also the fifth-highest for the second wicket by Australia in Tests.