Alfa Romeo AR 33503, Engine
| Engine capacity | 1,370 cm³ |
| Maximum power (range), hp | 103 |
| Maximum torque, N*m (kg*m) at rpm. | 124 (13) / 4600 |
| Fuel used | Petrol |
| Fuel consumption, l/100 km | 7.9 |
| Engine type | In-line, 4-cylinder |
| Maximum power, hp (kW) at rpm | 103 (76) / 6300 |
| Compression Ratio (Range) | 10.5 |
| Cylinder diameter (range), mm | 82 |
| Piston stroke (range), mm | 64.9 |
| Valve drive | DOHC |
| Number of valves per cylinder (range) | 4 |