| Engine name | manufacturer | configuration | cylinders |
|---|---|---|---|
| Kasei 12 | Mitsubishi | Radial | 14 |
| Kasei 13 | Mitsubishi | Radial | 14 |
| Kasei 14 | Mitsubishi | Radial | 14 |
| Kasei 15 | Mitsubishi | Radial | 14 |
| Kasei 21 | Mitsubishi | Radial | 14 |
| Kasei 22 | Mitsubishi | Radial | 14 |
| Kasei 23 | Mitsubishi | Radial | 14 |
| Kasei 23c | Mitsubishi | Radial | 14 |
| Kasei 24 | Mitsubishi | Radial | 14 |
| Kasei 25 | Mitsubishi | Radial | 14 |
| Kasei 26 | Mitsubishi | Radial | 14 |
| Kasei 26a | Mitsubishi | Radial | 14 |
| Kasei 27 | Mitsubishi | Radial | 14 |
| Kestrel IA | Rolls-Royce | V | 12 |
| Kestrel IB | Rolls-Royce | V | 12 |