Alfa Romeo AR 00504, Engine
| Engine capacity | 1,290 cm³ |
| Maximum power (range), hp | 53 - 90 |
| Maximum torque, N*m (kg*m) at rpm. | 102 (10) / 3500 |
| Fuel used | Petrol |
| Engine type | In-line, 4-cylinder |
| Additional engine information | Carburetor |
| Maximum power, hp (kW) at rpm | 53 (39) / 5200 |
| Compression Ratio (Range) | 7.5 - 9.1 |
| Cylinder diameter (range), mm | 74 |
| Piston stroke (range), mm | 75 |
| Number of valves per cylinder (range) | 2 |