General description The Mercedes-Benz OM651 was a four-cylinder turbo-diesel engine that was first introduced in October 2008 and replaced the four-cylinder OM646 and six-cylinder OM642 engines. The OM651 engine was a completely new design that was pre-assembled at Mercedes-Benz’s Untertürkheim-Stuttgart plant and completed at MDC Power GmbH in Kölleda. The OM651 engine had a cast […]
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