page_title: Isotta Fraschini V.4
section_title: Engines on display
hierarchical_section_title: Isotta Fraschini V.4 / Engines on display
caption_attribution_description: English: The Isotta-Fraschini V.4B 150 hp water-cooled, 6 cylinder of Caproni Ca.36 displayed at National Museum of the United States Air Force .
context_page_description: The Isotta Fraschini V.4 of 1916 was an Italian six-cylinder, water-cooled, in-line piston aero engine of World War I. Its construction was fairly typical of aircraft engines of the period with six cast-iron cylinders mounted in pairs with common heads. This engine was also produced by Alfa Romeo.
context_section_description: A V.4b is on display in the Gianni Caproni Museum of Aeronautics
  The Caproni Ca.36 on display in the National Museum of the United States Air Force is fitted with a V.4b engine.
caption: V.4B in a Caproni Ca.36 at the National Museum of the United States Air Force
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