Mercedes-Benz MB507 engine

{{Infobox automobile engine

|name=Mercedes-Benz MB507

|manufacturer= Mercedes-Benz

|production=1944

|configuration=60° V12

|bore={{convert|6.22-6.38|in|mm|1|lk=on|abbr=on}}

|stroke={{convert|7.09|in|mm|1|lk=on|abbr=on}}

|displacement={{convert|42.35-44.5|L|cuin|0|lk=on|abbr=on}}

|valvetrain=24-valve, SOHC, two-valves per cylinder

|power={{convert|1200|hp|kW|0|lk=on|abbr=on}}

|torque= {{convert|2630|lbft|Nm|0|lk=on|abbr=on}}

|fuelsystem=Fuel injection

|fueltype=Diesel

|coolingsystem=Water-cooled

|compression=17.0:1

|oilsystem=Dry sump

|weight={{convert|790-920|kg|lb|0|lk=on|abbr=on}}

}}

The Mercedes-Benz MB 507 was a four-stroke, naturally-aspirated, V-12 diesel marine engine; derived from the MB 503 gasoline engine. The MB 507 was also based on the Daimler-Benz DB 603 inverted V-12 aircraft engine, and shared an identical bore, stroke, and displacement. Unlike the gasoline-powered MB 503, the diesel-powered MB 507 did not use a supercharger.{{Cite web|url=https://oldmachinepress.com/2017/03/05/mercedes-benz-500-series-diesel-marine-engines/|title=Mercedes-Benz 500 Series Diesel Marine Engines|first=William|last=Pearce|date=March 5, 2017}}