British Rail Class 158
| British Rail Class 158 "Express Sprinter" | |
|---|---|
 Northern Rail unit 158791 | |
| In service | 1989 - present |
| Manufacturer | BREL |
| Built at | Derby Works |
| Family name | Sprinter |
| Constructed | 1989—1992 |
| Number built | 182 trainsets |
| Number in service | 170 trainsets |
| Formation | 2 or 3 cars per trainset |
| Operator(s) | Arriva Trains Wales East Midlands Trains First Great Western First ScotRail Northern Rail South West Trains |
| Specifications | |
| Car body construction | Welded aluminium |
| Car length | 22.16m |
| Width | 2.7 |
| Articulated sections | Flexible diaphragm within and between units |
| Maximum speed | 90 mph (140 km/h) |
| Weight | 37.8 t (37.2 long tons; 41.7 short tons) or 38.5 t (37.9 long tons; 42.4 short tons) per car |
| Traction system | DMU |
| Prime mover(s) | Cummins NTA855R1, Perkins 2006-TWH or Cummins NTA855R3 |
| Power output | 350 hp (260 kW) or 400 hp (300 kW) per engine |
| Transmission | Voith T211rz or T211rzz hydraulic and Gmeinder GM 190 final drive. |
| Braking system(s) | Pneumatic, Disc |
| Safety system(s) | AWS, TPWS |
| Track gauge | 1,435 mm (4 ft 8 1⁄2 in) standard gauge |
British Rail Class 158 Express Sprinter is a type of diesel multiple unit (DMU) train. They were built for British Rail between 1989 and 1992 by BREL at their Derby Works. They were built to replace old DMUs and locomotive-hauled passenger trains. Class 159 trains are almost the same as Class 158s. They work many non-electrified services such as Exeter St David's To London Waterloo. They were among the last new trains in the UK to be built with the old toilet system which emptied directly onto the track. BREL also built 20 carriages to 1m gauge for export to Thailand in 1990 - 1991
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