The company said Leonardo DRS was selected by General Dynamics Electric Boat and the U.S. Navy to design and manufacture permanent magnet main drive electric motors, propulsion motor drives, switchgear and propulsion controls.
The ship was designed to replace the USS Ohio class submarine fleet.
The USS Columbia class nuclear-powered submarines is a new class of ballistic missile submarines and is a top priority for the U.S. Navy.
At 560 feet long and displacing nearly 21,000 tons, the USS Columbia class submarines will be the largest submarines ever built by the United States.
Integrated electric propulsion components will be manufactured at Leonardo DRS facilities in the U.S.
The company has formerly provided integrated electric propulsion components for the same class submarines with a $1 billion price tag.