| Business | Phone |
| Aatco Transmission 13980 Sw Tualatin Valley Hwy, Beaverton 97005 | (503) 626-4619 |
| All Transmission Svc Co 12295 Sw Millikan Way, Beaverton 97005 | (503) 646-1742 |
| Cottman Transmission Center 17895 Sw Baseline Rd, Beaverton 97006 | (503) 533-8879 |
| Reliable Transmission Svc 18485 Sw Tualatin Valley Hwy, Beaverton 97006 | (503) 642-0100 |