It was the fourth straight month that the aerospace giant hasn't sold any 737 MAX planes. The jet was grounded worldwide six months ago following the second of two separate fatal crashes involving the plane.
The company has responded to the controversy by slowing down the production of the jet to 42 a month. It had originally planned to ramp production to about 57 737 MAX jets a month.
Overall, the company reported a 38% year-over-year decline in plane deliveries during the first seven months of the year. The company delivered 258 aircraft through July, compared with 417 during the same period last year.
Boeing's status as the world's largest airline maker is being threatened for the first time in seven years as European rival Airbus has been able to deliver 389 commercial planes in the first six months of the year.
Nearly 350 people were killed in the two crashes, the first of which occurred in Indonesia in October while the second crash was an Ethiopia Airlines flight.
Boeing shares were rising 0.4% to $334.06 Tuesday afternoon.