The engineers could use new T6-FBA couplings to make their maintenance work easier.
This Nashan Stellar Dynamics item can be found at Kenn's Salvage on Omega, in the market district. Kenn also gives you the Struggling Quarian assignment. You can still purchase the couplings from Kenn's terminal even if he has left Omega as a potential result of your actions in his assignment. Once completed, you will be rewarded with 40 experience points and invited to play Skyllian-Five poker with the engineers (and Tali if she has been recruited). Depending on your dialogue choices, you can lose or win 100 credits. Charm or Intimidate will win 500 credits. There will be no morality points in either case.
Mass Effect 3 Consequences Edit
If this assignment was completed and Kenneth and Gabriella were brought back on board the Normandy, at some point Kenneth or Gabby will tell the Commander that the FBA couplings "are still working great."