SINGAPORE (Reuters) - BOC Aviation Pte Ltd [BKCHNO.UL], the aircraft leasing arm of Bank of China Ltd (>> Bank of China Limited), on Tuesday said it has signed an agreement to buy 22 Boeing Co (>> Boeing Co) 737 jets.

The order is worth $2.27 billion at Boeing's list prices, although customers typically receive a discount.

The deal is equally split between 737-800 and 737 Max 8 aircraft, to be delivered over three years from 2018, BOC said. The 737 Max is the upgraded version of the 737, offering greater fuel efficiency and lower operating costs.

Boeing, in a separate statement, said it will add the planes to its order book when the deal is finalised.

The latest deal is in addition to BOC Aviation's August 2014 order for 82 Boeing jets worth $8.8 billion at list prices, comprising 50 737 Max aircraft, 30 737-800s and two 777-300ER widebody jets.

The Singapore-based lessor also ordered 43 Airbus Group SE (>> Airbus Group) A320 family of aircraft in July last year, including seven A320neo planes.

BOC Aviation said it had commitments to acquire 203 aircraft as of Sept. 30. Its portfolio comprises 253 owned and managed aircraft, operated by 59 airlines globally.

Airlines are increasingly reliant on lessors such as BOC Aviation as they seek to lower capital costs.

(This story has been corrected to show Singapore company, attribution in the second paragraph.)

(Reporting by Siva Govindasamy; Editing by Christopher Cushing)

By Siva Govindasamy

Stocks treated in this article : Airbus Group, Boeing Co, Bank of China Limited