Lufthansa Group is to equip 40 Airbus A320neo twinjets with CFM International's Leap-1A powerplant, having previously opted for the Pratt & Whitney PW1100G for part of its A320neo backlog.
The German operator ordered 70 of the re-engined aircraft last year along with 30 regular A320s.
It had also previously agreed to take 25 A320neo and five A321neo jets in 2011, selecting the PW1100G engine for this batch. Lufthansa says it has orders for 60 PW1100G-powered A320neo-family jets in total.
Lufthansa confirms that the Leap-1A will be fitted to 40 of the aircraft it ordered last year and that these will be delivered from 2021.
It says the powerplant is "significantly quieter" than the CFM56 engine on the baseline A320 and that it will consume 15% less fuel.
Lufthansa values the Leap engine order at over €1 billion ($1.3 billion) at catalogue prices.