Alfa Romeo AR 33501, Engine
| Engine capacity | 1,351 cm³ |
| Maximum power (range), hp | 90 |
| Maximum torque, N*m (kg*m) at rpm. | 115 (12) / 4400 |
| Fuel used | Petrol |
| Fuel consumption, l/100 km | 8.4 |
| Engine type | Horizontally opposed, 4-cylinder |
| Maximum power, hp (kW) at rpm | 90 (66) / 6000 |
| Compression Ratio (Range) | 9.5 |
| Cylinder diameter (range), mm | 80 |
| Piston stroke (range), mm | 67.2 |
| Valve drive | DOHC |
| Number of valves per cylinder (range) | 2 |