| AutoCar | Ford | Mack |
| Brockway | Freightliner | Marmon |
| Chevrolet / GMC | IHC | Peterbilt |
| Diamond Reo | John Deere | Volvo White |
| Dodge | Kenworth |
| Heavy Trucks & Farm |
| Climatech | Ogura |
| Euclid | Peterbilt |
| Freightliner | Pitts |
| IHC Navistar | Red Dot |
| Kenworth | TruckAir |
| Kysor | Volvo White |
| Mack | Warner |
| Clutch Bearings | Clutch Coils | Clutch Hubs |