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Curtiss OX-5 V-8 Engine


Display Status:

This object is on display in the Boeing Aviation Hangar room at Steven F. Udvar-Hazy Center in Chantilly, VA.

Curtiss OX-5 V-8 Engine

Collection Item Summary:

Curtiss OX-5

Curtiss manufactured more than 10,000 OX-5 V-8s during World War I, mostly for Curtiss JN-4 Jenny military trainers. After the war, the U.S. government sold thousands of surplus OX-5s and Jennys to the public at a fraction of their original cost. The availability of a well-proven, inexpensive engine in such quantity was a mixed blessing. It enabled many people of modest means to fly, but manufacturers of more modern power plants suffered.

The OX-5 was a mainstay for barnstormers, private pilots, and aircraft designers in the United States in the 1920s and ’30s. Besides the Jenny, the OX-5 also powered many new civil aircraft manufactured by Alexander, Curtiss, Fairchild, Laird, Travel Air, Waco, and others. This OX-5 was removed from a Curtiss JN-4D that suffered a landing accident near Greensboro, North Carolina, about 1921.

Gift of Wesley Tallent

Type:reciprocating, 8 cylinders, V-type, liquid cooled

Power rating:67 kW (90 hp) at 1,200 rpm

Displacement:8.3 L (503 cu in)

Weight:177 kg (390 lb)

Manufacturer:Curtiss Aeroplane and Motor Co., Garden City, N.Y.


Collection Item Long Description:

Data Source

National Air and Space Museum


Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum


Glenn H. Curtiss

Credit Line

Gift of Wesley Tallent.


Length 144.1 cm (56.75 in.), Width 75.6 cm (29.75 in.), Height 93.3 cm (36.75 in.)

Country of Origin

United States of America



Physical Description

  • Type: Reciprocating, V-type, 8 cylinders, liquid cooled
  • Power rating: 67 kW (90 hp) at 1,200 rpm
  • Displacement: 8.3 L (503 cu in)
  • Bore and Stroke: 102 mm (4 in.) x 127 mm (5 in.)
  • Weight: 177 kg (390 lb)


PROPULSION-Reciprocating & Rotary

Inventory Number