This fan and spacer was removed from my 1971 Chevrolet Nova that I used to own. This fan is a for a 250 c.i.d. Inline six engine (not a V8).
This Chevy (GM) 4 Blade 250 L6 Engine Cooling Fan is an OEM part (3973115) with a curved blade design made of steel. It includes a spacer (3927792) and is compatible with vintage vehicles like the 1971 Nova. The fan is specifically designed for the GM brand and was manufactured in the United States. It is not a universal fitment or a performance part.