| Business | Phone |
| Transmissions Technologies 5428 N National Dr, Knoxville 37914 | (865) 637-7294 |
| Oozx Usa 10101 Caneel Dr, Knoxville 37931 | (865) 691-4000 |
| Modine Manufacturing Co 5050 S National Dr, Knoxville 37914 | (865) 546-5920 |
| Motor Products Co Inc 10603 Lexington Dr, Knoxville 37932 | (865) 671-1234 |
| Lokar Inc 10924 Murdock Dr, Knoxville 37932 | (865) 966-2269 |