| Manufacture | Delco |
| Amperage Rating | 70 |
| Family | 21SI |
| Fan Type | External |
| Ground Type | Negative |
| Mounting Type | J180 Hinge |
| Plug Type | 151 |
| Regulator Type | Internal |
| Rotation Direction | Clockwise (Right) |
| Voltage | 24 |
| Cummins | 3675174RX |
| Delco-Remy | 10461235, 19010111, 19010182 |
| Industry | 8003 |
| Komatsu Reman | ALT1022 |
| Model Number | 21SI |
| Prestolite | 110-446 |
| San Joaquin | SJA-12198 |
