Mack Avenue Engine Plant

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

Mack Avenue Engine
4000 St. Jean Avenue, Detroit, Michigan 48214
Floor Space: 1.4 million square feet

Acreage: 110 acres

  • 3.0-liter (V-6) Pentastar for the Chrysler 300*, Jeep Grand Cherokee* and Jeep Wrangler*
  • 3.2-liter (V-6) Pentastar for the Jeep Cherokee
  • 3.6-liter (V-6) Pentastar for the Dodge Grand Caravan and Dodge Journey

*Vehicles exported to the China market

Employment: 772 (646 hourly; 126 salaried)

Robotics: 17

Union Local: UAW Local 51, 412 and 889

Plant History: The plant was purchased in 1953 by Chrysler Corporation and converted to a stamping plant in 1974. In 1992, it was converted to produce the Dodge Viper. Dodge Viper production moved to Conner Avenue Assembly Plant (Detroit, Mich.) in 1995. The Mack Engine Plant began producing engines in 1998. A second plant, Mack Engine II, was completed next door and began producing a new, smaller V-6 engine in 2000. 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 4.7-liter V-8 engine was later built on April 4, 2013. More than 3 million were manufactured since production began in 1998. Production of the Pentastar engine began in January 2014. The plant produced its one millionth Pentastar engine on March 29, 2018.

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: June 2018)

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