Power cars were imported under USAID. Served in all railway lines. Compartments were built in Sri Lanka. Appearance and the
specificationa are similar to Class S3. All scrapped.
| Engine Class | S4 |
| Built Country | Germany |
| Builder | MAN Diesel Company |
| Imported Year | 1962 |
| Power Type | Diesel Hydraulic |
| Engine Type | MAN – L12 V21 |
| Power Output | 1000 hp |
| Maximum Speed | 80 km/h |
| Axel Arrangement | B-B |
| Weight | 47 T |
| Livery | Dark Red |
| Total Imported | 5 Power Sets 621-625 |
Update in-progress
