| Engine name | manufacturer | configuration | cylinders |
|---|---|---|---|
| R-1820-32 | Wright | Radial | 9 |
| R-1820-33 | Wright | Radial | 9 |
| R-1820-34 | Wright | Radial | 9 |
| R-1820-34A | Wright | Radial | 9 |
| R-1820-4 | Wright | Radial | 9 |
| R-1820-40 | Wright | Radial | 9 |
| R-1820-41 | Wright | Radial | 9 |
| R-1820-42 | Wright | Radial | 9 |
| R-1820-44 | Wright | Radial | 9 |
| R-1820-45 | Wright | Radial | 9 |
| R-1820-49 | Wright | Radial | 9 |
| R-1820-5 | Wright | Radial | 9 |
| R-1820-50 | Wright | Radial | 9 |
| R-1820-51 | Wright | Radial | 14 |
| R-1820-52 | Wright | Radial | 9 |