Mack Trucks, Inc., is an American truck–manufacturing company and a former manufacturer of buses and trolley buses. Founded in 1900 as the Mack Brothers Company, it manufactured its first truck in 1907 and adopted its present name in 1922. Mack Trucks is a subsidiary of AB Volvo which purchased Mack along with Renault Trucks in 2000. After being founded in Brooklyn, New York, the company's headquarters were in Allentown, Pennsylvania from 1905 to 2009 when they moved to Greensboro, North Carolina. The entire line of Mack products is still produced in Lower Macungie, Pennsylvania, with all powertrain produced in the Hagerstown, Maryland plant. They also have additional assembly plants in Pennsylvania, Australia, and Venezuela. There was also (previously) a Mack plant in Hayward, California.
Currently, the company's manufacturing facilities are located at Lehigh Valley Operations (LVO) formally known as the Macungie Assembly Operations Plant in Lower Macungie Township, Pennsylvania. Mack Trucks is one of the top producers in the vocational and on-road vehicle market, class 8 through class 13.
Mack trucks have been sold in 45 countries. Located near its former Allentown corporate headquarters, The Macungie, Pennsylvania manufacturing plant produces all Mack products including Mack MP-series engines.
According to local historians, Mack transmissions, TC-15 transfer cases, and rear engine power take-offs are designed and manufactured in Hagerstown, Maryland, which was the original factory location.
Parts for Mack's right-hand-drive vehicles are produced in Brisbane, Australia for worldwide distribution. Assembly for South America is done at Mack de Venezuela C.A., in Caracas, Venezuela. The Venezuela operation is a complete knock down (CKD) facility. Components are shipped from the United States to Caracas for final assembly.
In addition to its Macungie manufacturing facility, Mack also has a remanufacturing center in Middletown, Pennsylvania.