| Owner (company): | Deutsche Bundesbahn |
| Line number: | 901 401-405, 407-408, 501-502 |
| Type: | Intermediate car with restaurant and kitchen |
| Label: | Baureihe 901.4 (WRy); 901.5 (WRy) |
| Category: | MM |
| Era: | 4b |
| Axle arrangement: | 2' 2' |
| Overall length: | 18400 mm |
| Width: | 3012 mm |
| Heigth: | 3765 mm |
| Wheelbase: | 14900 mm |
| Pivot distance: | 12600 mm |
| Bogie wheelbase: | 2300 mm |
| Running wheel diameter: | 900 mm |
| Weight: | 24000 kg |
| Seat: | 24 (901.4), 23 (901.5) |
| Maximum speed: | 160 km/h |
| Minimum curving radius: | 125 m |
| Manufacturer: | AW Nürnberg |
| Made in (Year): | 1979 (901.4), 1981 (901.5) |
| Out of service: | 1988 |
| Amount: | 6 (901.4) + 2 (901.5) |
| Water: | 600 l |
| Brake: | KE-P-A-Mg (D) |
| Heating system: | Jettair air conditioning - 220/380 V 50 Hz |
| Lighting: | Electric |
| For Alpen-See-Express, rebuilt from 1979 on | |