Union Pacific 3900 Series 4-6-6-4 Challenger drawings, engine only- Driving Wheel Center – Front (3,4,5)
SKU/Drawing Number: GSC 53257
| Wheel Arrangement: | 4-6-6-4 |
| Scale to 1 ft.: | 3” |
| DWG. Size (in): | 24x38 |
| Drawing Title: | Driving Wheel Center – Front (3,4,5) |