Note: This engine is located in the Research & Development Gallery on a controlled-access portion of Wright-Patterson Air Force Base. The gallery will close until further notice beginning May 1, 2013, as part of budget reduction requirements due to sequestration.
The Benz BZ-4 is a six-cylinder, liquid-cooled, in-line engine of 200 hp. The German A.G.O. C II, Albatross, D.F.W. CV, Halberstadt C III and Halberstadt CV reconnaissance aircraft were among those using this engine.