Pratt & Whitney will work to build 38 F135 propulsion engines, including 36 install engines and two conventional takeoff and landing spare engines, Pratt & Whitney said Tuesday.
Details on costs will be announced once the low rate initial production contract is finalized, the subsidiary said.
The deal includes 32 common configuration engines for the CTOL and carrier variant aircraft and six engines for the short takeoff and vertical landing aircraft.
Pratt & Whitney says costs for the CTOL and carrier variant engines cost 2.5 percent less than the 35 engines covered under the fifth LRIP batch.
Costs for the STOVL variant engines came down 9.6 percent from the three engines in lot five, the subsidiary added.
Pratt & Whitney will start to deliver those engines in the fourth quarter of 2013 along with program management and engineering support services, production non-recurring initiatives, sustainment and spare parts.
The new deal also includes propulsion systems for Australia and Italy.
Pratt & Whitney has supplied 107 production engines to date for the F-35.