Boeing and Mitsubishi Heavy Industries (MHI) have entered an agreement that seeks to reduce production costs associated with the 787's wings.
The agreement will also see the two companies conduct joint studies into aerostructures technologies for future aircraft, says Boeing in a statement.
Mitsubishi is a major supplier of the US firm, producing 787 wings in Nagoya. The agreement will also look at how lean production, automation, and other methods can make MHI more efficient.
"We are delighted to be enhancing the competitiveness of our commercial aircraft business with this agreement," says Shunichi Miyanaga, president and chief executive of Mitsubishi Heavy Industries.
"We have built our partnership with Boeing over more than 40 years, collaborating on various aircraft programs including the 737, 747, 767, 777, 787 Dreamliner and state-of-the-art 777X and look forward to cooperating to explore future opportunities."
Boeing adds that it obtains about $5 billion in goods and services from Japan annually.