Engine Manufacturer
The manufacturer of the engine as expressed as a three digit manufacturer code
| Code | Description |
| BWR | Borgwarner |
| CAA | Caterpillar |
| CUA | Cummins |
| CYA | Chrysler |
| DEA | Detroit |
| DOA | Dodge |
| DSA | Dana Spicer |
| DUA | Deutz |
| FCA | Fiat Chrysler/Stellantis |
| FOA | Ford |
| GMA | General Motors |
| HIA | Hino |
| IHA | International |
| ISA | Isuzu |
| IVA | Iveco |
| MCA | Mack |
| MSA | Mercedes |
| MUA | Mullen |
| MXA | Mitsubishi |
| NIA | Nissan |
| PAA | Paccar |
| PTA | Proterra |
| RIA | Rivian |
| RVA | Mack |
| SCA | Scania |
| UDA | UD Trucks |
| VOA | Volvo |
| WKA | Workhorse |
| ZZA | Zytek |
