Volvo is investing about $50 million in a new engine block production line at its plant north of Hagerstown, a company spokeswoman said Friday.
The additional production will mean about 50 more jobs for the plant, which now has 1,200 employees, said Ilse Ghysens, a spokeswoman for Volvo Powertrain North America.
The new operation is expected to begin by the end of 2010.
The investment was announced Thursday along with a Mack Trucks restructuring plan that includes moving Mack's headquarters from Allentown, Pa., to Greensboro, N.C.
The Volvo Powertrain plant in Washington County makes truck engines and transmissions for Volvo and Mack.
Volvo acquired Mack and Renault in 2001.