GE Capital Aviation Services (GECAS) today announced it has placed an order for 75 of Boeing’s 737 Max 8 airplanes. The order is valued at $8.25 billion.

This recent order, which will be fulfilled at Boeing’s Renton factory, increases GECAS’ firm order book for the 737 Max to 170 airplanes, the largest of any aircraft leasing company, the companies said in a press release.

“These new orders will enable GECAS to serve our clients’ needs — assisting in managing their fleets, transitioning aircraft and providing new equipment,” Alec Burger, GECAS president and CEO, said in a press release. “Our customers want the latest technology and fuel efficiency, and the CFM International LEAP-1B engines on these aircraft deliver outstanding productivity and reliability in the single-aisle market.”

With 3,419 orders to date, the 737 Max currently is the fastest-selling airplane in Boeing history.

“When it comes to demand, this order shows the Max 8 remains at the heart of the single-aisle market,” Brad McMullen, vice president, North America and Leasing Sales, Boeing Commercial Airplanes, said in a press release. “We appreciate the confidence GECAS has in the 737 Max and look forward to seeing the airplanes placed with carriers all over the world.”