| Business | Phone |
| Aamco Transmissions 960 W Holt Blvd, Ontario 91762 | (909) 986-4525 |
| Advanced Transmissions 1156 W Holt Blvd, Ontario 91762 | (909) 984-3418 |
| Brooks Transmission 1043 Brooks St, Ontario 91762 | (909) 986-4301 |
| Cal-Tex Automatic Transmission 1541 Brooks St, Ontario 91762 | (909) 988-9697 |
| E & T Transmission 5528 W Mission Blvd, Ontario 91762 | (909) 590-5301 |
| Kormex Trans Parts 2020 S Vineyard Ave, Ontario 91761 | (909) 947-0569 |
| Mountain Transmission 221 N Mountain Ave # L, Ontario 91762 | (909) 391-3686 |
| Brooks Transmission Inc 123 E Calif, Ontario 91761 | (909) 395-8877 |
| Speedway Transmissions 415 S Euclid Ave, Ontario 91762 | (909) 988-9133 |
| T & H Autobody 4790 W Mission Blvd # B, Ontario 91762 | (909) 590-0718 |
| United Transmission 939 W State St # J, Ontario 91762 | (909) 988-4756 |