Employees at Mack Avenue Engine Plant I (Detroit) built the final 4.7-liter V-8 engine last week, ending 15 years of production that yielded more than 3 million powerplants used in Ram trucks and other Chrysler Group products.

The last 4.7-liter (right) was signed by employees and will be displayed in the plant’s lobby.

"Producing more than 3 million engines is a testament to each and every person that has worked at Mack Avenue Engine Plant I during the past 15 years," said UAW Local 51 President Lorenzo Poole.

"The Mack Avenue team should feel incredibly proud of what we have accomplished. I applaud all the men and women who have helped build the 4.7 for all these years,” said Plant Manager Bob Hollingsworth. "We are going to celebrate because we have a lot of work ahead of us, producing the award-winning Pentastar engine."

In November 2012, Chrysler Group announced that it will invest $198 million and add up to 250 new jobs to produce the award-winning Pentastar V-6 engine at Mack I.

In addition to the Ram 1500, the 4.7-liter V-8 was used in the Dodge Dakota, Dodge Durango and the Chrysler Aspen, and the Jeep® Grand Cherokee and Jeep Commander.