Manassas, Virginia

Western Branch Diesel’s Manassas operation is a full-service facility conveniently located between I-66 and Prince William Parkway, complete with a comfortable lounge and cable TV for our customers. Whether it is through our 16 bay facility or our fleet of over 20 field and road service trucks, we offer a wide variety of repairs to engines & transmissions, as well as undercarriage and electrical repair for construction, on highway, off highway, generator and marine power needs.

Our team represents over 250 years of combined experience through our 30+ trained technicians - twenty trained in the generator field, and our professional office personnel and service writers. We offer 24 hour emergency service and will deliver fuel or remove old fuel from your site 24 hours a day, 7 days a week.  Be it routine truck maintenance, installation of 1500DSE Gensets or  servicing an MTU 16V4000 Powered Rotary UPS system, we’re eager to serve all of your needs with your complete satisfaction as our number one goal.

Our services include:

• Fleet Maintenance Contracts
• Suspension Maintenance & Repair
• DOT Inspections
• Engine / Transmission Maintenance & Repair
• A/C Installations & Repair
• Auxiliary Vehicle Heat &  A/C Solutions
• Chassi Dyno Testing
• Transmission Dyno Testing
• Chassis Maintenance & Repair
• Fuel Delivery & Removal
• Fuel Polishing & Sampling
• Generator Rental (20KW to 2000KW)
• Generator Service Contracts
• Full-Service Parts Department