| Business | Phone |
| A Plus Transmission Spec 27207 Tomball Pkwy, Tomball 77375 | (281) 290-8621 |
| Accurate Auto Ctr 12028 Spring Cypress Rd, Tomball 77377 | (281) 374-8787 |
| Certified Transmission Inc 24419 Fm 2978 Rd, Tomball 77375 | (281) 351-4343 |
| Cottman Transmission Centers 1599 Hicks St, Tomball 77375 | (281) 255-2819 |
| National Transmission Center 27202 Tomball Pkwy, Tomball 77375 | (281) 351-4633 |