| Mitsubishi 4A3 engine | |
| Manufacturer: | Mitsubishi Motors |
| Configuration: | Inline-four |
| Production: | 1993–present |
| Fueltype: | Gasoline |
| Fuelsystem: | Electro carburettor Electronic fuel injection Direct Injection |
| Coolingsystem: | Water-cooled |
| Head: | Aluminium |
| Block: | Cast iron |
| Valvetrain: | SOHC 4 valves x cyl. DOHC 5 valves x cyl. |
| Compression: | 8.5:1-11.0:1 |
| Displacement: | NaNcc |
| Bore: | 60mm 66mm |
| Stroke: | 58.3mm 80mm |
| Power: | NaN0NaN0 |
| Torque: | NaN0NaN0 |
| Turbocharger: | On 1993 659cc DOHC only |
The Mitsubishi 4A3 engine is a range of alloy-headed inline four-cylinder engines from Mitsubishi Motors, introduced in 1993 in the sixth generation of their Mitsubishi Minica kei car. It shares a 72mm bore pitch with the 3G8-series three-cylinder engines, but has a considerably shorter stroke so as to stay beneath the 660 cc limit imposed by the Kei class.[1]
A 1094cc version was made available in 1997 for larger cars, and was subsequently fitted to the Mitsubishi Pistachio, (and Pajero JR), a limited production car based on the kei class Minica equipped with the company's Automatic Stop-Go (ASG) system for cutting the engine when idling. So equipped, the Pistachio was able to record fuel economy figures of 30km/L.
Displacement — 659cc
Bore x Stroke — NaNmm
Fuel type — Unleaded regular gasoline
Displacement — 1094cc
Bore x Stroke — NaNmm
Fuel type — Unleaded regular gasoline