Mack Avenue Engine Complex

4000 St. Jean Avenue, Detroit, Michigan, United States

Floor Space: 1.4 million square feet

Acreage: 110 acres

Products: Plants are currently being converted into the assembly site for production of the all-new, three-row, full-size Jeep® SUV and next-generation Jeep Grand Cherokee, along with plug-in hybrid models

Employment: Facilities are currently under construction

Union Local: UAW Local 51, 412 and 889

Plant History: Chrysler Corporation purchased the plant in 1953 from Briggs Manufacturing Co. and continued to produce car bodies and frames. In 1992, it was converted to produce the Dodge Viper. Dodge Viper production moved to Conner Avenue Assembly Plant (Detroit) in 1996 so contruction on the new $900 million engine plant could begin.

The Mack Avenue Engine Plant began producing V-8 engines in 1998. Expansion lines were launched in May 2001. On Nov. 15, 2012, the Company announced that it would invest $198 million and add up to 250 new jobs to produce the award-winning Pentastar (V-6) engine at Mack I. The last of more than 3 million 4.7-liter V-8 engines was built on April 4, 2013. Production of the Pentastar engine began in January 2014. The plant produced its one millionth Pentastar engine on March 29, 2018.

Construction on a $750 million second engine plant next door to Mack Engine I began in 1998. Mack Engine II began producing the 3.7-liter V-6 engine for the Jeep Liberty in 2000. The plant built its last engine in September 2012, producing nearly 3 million over 12 years.

On Feb. 26, 2019, FCA announced plans to invest $1.6 billion to convert the two plants that comprise the Mack Avenue Engine Complex into the future assembly site for the next-generation Jeep Grand Cherokee, as well as an all-new, three-row, full-size Jeep SUV and plug-in hybrid (PHEV) models, adding 3,850 new jobs to support production. It was part of a $4.5 billion investment announcement that will also impact five existing Michigan facilities. In total, the proposed projects will create nearly 6,500 new jobs.

World Class Manufacturing Accomplishments
Mack Avenue Engine Complex was awarded silver for its efforts in implementing World Class Manufacturing (WCM) on Dec. 14, 2017, just 15 months after reaching the inital award level of bronze, an unprecedented achievement. WCM is a methodology that focuses on eliminating waste, increasing productivity, and improving quality and safety in a systematic and organized way. WCM engages the workforce to provide and implement suggestions on how to improve their jobs and their plants, promoting a sense of ownership. WCM was first implemented by Fiat in 2006 and introduced to Chrysler Group as part of the alliance between the two companies in June 2009. Mack Avenue received its bronze designation on Sept. 20, 2016.

(Updated: July 2019)

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