Western Branch Diesel is a distributor and service provider for Detroit Diesel, MTU, Volvo Penta and Allison Transmissions.

Headquartered in Portsmouth, Virginia, Western Branch Diesel operates out of 12 branches strategically located throughout Virginia, West Virginia, North Carolina, South Carolina, Ohio, and Kentucky. These branches supply sales and service to the on-highway, power generation, oil/gas, construction and industrial, mining and quarry, and marine markets. The company's 260+ team members include over 120 highly trained service technicians.