Renault 12S

As 411
Preserved Argus As 411
Type	Piston aircraft engine
Manufacturer	Argus Motoren
Major applications	Arado Ar 96 Focke-Wulf Fw 189
Number built	2,600

The Argus 411 was a twelve-cylinder, air-cooled, inverted-V12 aircraft engine developed by Argus Motoren in Germany during World War II.

The As 411 was a refined and more powerful version of the Argus As 410. Most 411 production was undertaken by Renault in occupied Paris, these engines were used to power the Siebel Si 204 and the post war Dassault MD 315 Flamant. It developed 600 PS (592 hp, 441 kW) at 3,300 rpm

Following the end of World War II, Renault continued to manufacture the engine as the Renault 12S. After merging the French aircraft engine manufacturers into SNECMA in 1945, production continued under the new designation SNECMA 12S.

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