The Mitsubishi Sirius or 4G6/4D6 engine is the name of one of Mitsubishi Motors' four series of inline-four automobile engines, along with Astron, Orion, and Saturn.
Mitsubishi G62B engine
4G63B Cyclone Dash 3x2 in a fifth generation Galant
Mivec Turbo 4G63 in a Lancer Evo IX
Mitsubishi 4D68 engine mounted in a 1998 Galant Station Wagon (Legnum)
The Mitsubishi Astron or 4G5/4D5 engine, is a series of straight-four internal combustion engines first built by Mitsubishi Motors in 1972. Engine displacement ranged from 1.8 to 2.6 litres, making it one of the largest four-cylinder engines of its time.
Mitsubishi G54B engine
Turbocharged and intercooled 4D56 engine in a 1991 Mitsubishi Pajero