DL500S
Diesel-electric locomotive
| Build: | ALCo 1965−1970 |
| Top speed: | 120 km/h |
| Gauge: | 1668 mm, 1676 mm |
| UIC axles: | Co'Co' |
| Length: | 18.56 m |
| Width: | 2.99 m |
| Height: | 4.22 m |
| Weight: | 111 t |
| Power output: | 1626 kW |
| Source: | es.wikipedia.org |
Career
 | ADIF 321 | Administrador de Infraestructuras Ferroviarias | 6 |
 | ALL Central DL500S | ALL Central / San Martín | 1 |
| Alsa 321 | Alsa Rail | 3 |
| ARS 321 | Acciona Rail Services S.A. | 1 |
| COMSA 321 | Grupo COMSA / COMSA EMTE | 1 |
| Cosfesa 321 | Contratas Y Servicios Ferroviarios | 1 |
| G&O 321 | Guinovart & Osha | 1 |
| RENFE 321 | Renfe Operadora | 10 |
| Tecsa 321 | Tecsa | 1 |
| Tracción Rail 321 | Tracción Rail | 2 |
| Vias 321 | Vias | 2 |
