| Business | Phone |
| Automotive Products 4000 Pinnacle Ct, Auburn Hills 48326 | (248) 377-9343 |
| Borg Warner 3800 Automation Ave 500, Auburn Hills 48326 | (248) 754-9600 |
| Borg Warner Inc 3850 Hamlin Rd, Auburn Hills 48326 | (248) 754-9200 |
| Brose North America Inc 1107 Centre Rd, Auburn Hills 48326 | (248) 340-1100 |
| Cooper-Standard Automotive 2650 N Opdyke Rd, Auburn Hills 48326 | (248) 754-2000 |
| Plastech 2500 Executive Hills Dr, Auburn Hills 48326 | (248) 858-2800 |
| Gkn Plc 3300 University Dr, Auburn Hills 48326 | (248) 377-1200 |
| Metaldyne Sintered Components 3201 University Dr # 400, Auburn Hills 48326 | (248) 975-6700 |