Mitsubishi 4A9 engine

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The Mitsubishi 4A9 engine is an all-alloy inline four-cylinder engines from Mitsubishi Motors. The engine project was begun as a joint effort by Mitsubishi Motors and DaimlerChrysler (DCX), with Mitsubishi handling the development of the engines and MDC Power GmbH, a company previously jointly established by Mitsubishi and DCX, handling production. It was first introduced in the 2004 Mitsubishi Colt supermini. The 4A9 is Mitsubishi's first four-cylinder engine family to adopt a high-pressure die-cast aluminum block. All engines developed within this family have aluminum cylinder block and head, four valves per cylinder, double overhead camshaft layouts, and MIVEC continuous variable valve timing (intake only).

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