Individually Owned: 150,657
Corporate Owned: 137,281
Hirth 4201 Aircraft Engine
| Manufacturer Name | Hirth |
| Model Name | 4201 |
| Aircraft Engine Type | 2 Cycle |
| Horsepower or Pounds of Thrust (For Reciprocating Engines) |
15 hp |
| Thrust | n/a |
| Number of aircraft regsitrations with this engine type | 6 |