The U.S. Navy on Jan. 8 awarded GE Aerospace a $1.4 billion contract for five lots of T408 engines to power the Sikorsky CH-53K heavy-lift helicopter for the U.S. Marine Corps.

Naval Air Systems Command’s contract to the company covers lots nine through 13 for the engine, following six previous contracts—the last of which was announced in April 2023. The award covers new production and spare engines along with sustainment.

“This latest contract is a testament to the T408’s ability to deliver the power, durability and efficiency the Marine Corps depends on,” Scott Snyder, Heavy Lift Engines Program director for GE Aerospace, said in an announcement. “We are honored to support the CH-53K and the critical mission it performs for Marines, joint forces and allies around the globe.”

The award follows a September 2025 award of $10.86 billion to Sikorsky for up to 99 of the helicopters, the largest contract in the program’s history. The helicopters are expected to be delivered between 2029-2034. Twenty CH-53Ks had been delivered to the Marines, with another 63 in production at the time of that award.