Mercedes-Benz M19 engine

{{Infobox automobile engine

|image =

|name = Mercedes-Benz M19

|manufacturer = Mercedes-Benz

|production = 1932-1933

|configuration = Straight-eight

|bore = {{convert|78|mm|in|1|lk=on|abbr=on}}

|stroke = {{convert|100|mm|in|1|lk=on|abbr=on}}

|displacement = {{convert|3.8|L|cuin|0|lk=on|abbr=on}}

|valvetrain = 16-valve, DOHC, two-valves per cylinder

|power = {{convert|85|hp|kW|0|lk=on|abbr=on}}

|torque = {{convert|140|lb.ft|N.m|0|lk=on|abbr=on}}

|fuelsystem = Carburetor

|fueltype = Gasoline

|oilsystem = Dry sump

|weight =

|predecessor= Mercedes-Benz M08 engine

|successor= Mercedes-Benz M22 engine

}}

The Mercedes-Benz M19 engine is a naturally-aspirated, 3.8-liter, straight-8 engine, designed, developed and produced by Mercedes-Benz; between 1932 and 1933.{{Cite web|url=https://www.autointro.net/product/cars/mercedes-benz-typ-mannheim-sedan-w10-1929-380-s-w19|title=MERCEDES BENZ Typ Mannheim Sedan (W10) 380 S (W19) - AutoIntro.net}}{{Cite web|url=https://sportlichleicht.com/info/engines/m19|title = Mercedes-Benz M19 Engine}}