A new 23,000-lb. rear axle and 325-horsepower engine rating boost durability and performance for vocational customers.

In an effort to give Mack Trucks’ vocational customers improved durability and broader options for their applications, Mack is now offering a 23,000-pound rear axle and Cummins B6.7 engine with ...

Mack Trucks has expanded its MD Series line with a new 23,000-lb. rear axle offering and a 325 hp engine rating. Mack says the move expands its versatility, opening it to more applications. The engine ...

When paired with the 325 hp engine rating and the Allison 3000RDS transmission, the Mack MD is now capable of increased ...