In the other changes, Jimmy Tupou moves from lock to blindside flanker as he prepares to face his former team for the first time, with Gerard Cowley-Tuioti replacing him in the second row.
Jerome Kaino moves from No6 to No8, and Melanai Nanai returns to the left wing, with Rene Ranger dropped to the development team in a bid to find more match fitness.
There is one notable addition in the reserves, with former New Zealand Under-20s midfielder TJ Faiane set to make his Super Rugby debut after being sidelined for the past two seasons with major injuries.
"We are looking for a much more competitive effort at set piece, and with more accuracy in core skills," Umaga said, after reviewing a poor performance from his pack against the Highlanders.
"You cannot be competitive in this competition with the error rate that we committed last week."
The Blues team to play the Crusaders at AMI Stadium on Friday, kick-off 7.35pm is: Michael Collins, Matt Duffie, Rieko Ioane, George Moala, Melani Nanai, Piers Francis, Augustine Pulu, Jerome Kaino, Blake Gibson, Jimmy Tupou, Patrick Tuipulotu, Gerard Cowley-Tuioti, Ofa Tu'ungafasi, James Parsons (c), Pauliasi Manu.
Reserves: Matt Moulds, Sam Prattley, Sione Mafileo, Akira Ioane, Murphy Taramai, Billy Guyton, Ihaia West, TJ Faiane.