| Business | Phone |
| Anderson Industrial Engines Co 5532 Center St, Omaha 68106 | (402) 558-8700 |
| Cummins Central Power 5515 Center St, Omaha 68106 | (402) 551-7678 |
| Daffin Sales & Svc Inc 2116 Madison St, Omaha 68107 | (402) 733-6000 |
| Diesel Power Equipment Co 15225 Industrial Rd, Omaha 68144 | (402) 330-5100 |
| Monico Diesel Engine Svc 1508 Marcy St, Omaha 68108 | (402) 341-4137 |
| Interstate Powersystems 10143 S 136th St, Omaha 68138 | (402) 331-4104 |