Mitsubishi 4A3 engine

4A3
Overview
Manufacturer	Mitsubishi Motors
Production	1993–present
Combustion chamber
Cylinder block alloy	Cast iron
Cylinder head alloy	Aluminium

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.

A 1.1 L version was made available in 1999 for bigger cars, and was subsequently fitted to the Mitsubishi Pistachio, 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 30 km/L.

Displacement — 659 cc
Bore — 60.0 mm
Stroke — 58.3 mm
Fuel type — Unleaded regular gasoline

Displacement — 1094 cc
Bore — 66.0 mm
Stroke — 80.0 mm
Fuel type — Unleaded regular gasoline

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