| Engine name | manufacturer | configuration | cylinders |
|---|---|---|---|
| R-1690-42 | Pratt & Whitney | Radial | 9 |
| R-1690-5 | Pratt & Whitney | Radial | 9 |
| R-1690-52 | Pratt & Whitney | Radial | 9 |
| R-1750 | Wright | Radial | 9 |
| R-1820-1 | Wright | Radial | 9 |
| R-1820-103 | Wright | Radial | 9 |
| R-1820-105A | Wright | Radial | 9 |
| R-1820-17 | Wright | Radial | 9 |
| R-1820-19 | Wright | Radial | 9 |
| R-1820-20 | Wright | Radial | 9 |
| R-1820-22 | Wright | Radial | 9 |
| R-1820-25 | Wright | Radial | 9 |
| R-1820-26 | Wright | Radial | 9 |
| R-1820-3 | Wright | Radial | 9 |
| R-1820-30 | Wright | Radial | 9 |