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PowertrainMercedes-BenzEngineMercedes-Benz OM651
Mercedes-Benz OM651
Widely used diesel with strong fundamentals but meaningful injector, timing, cooling, and emissions-system dependencies.
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PowertrainMercedes-BenzGearboxMercedes-Benz 9G-Tronic
Mercedes-Benz 9G-Tronic
Efficient nine-speed automatic that needs correct fluid service, software context, and careful low-speed testing.
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