This is an original 1958 Chevy V8 4 Barrel Oil Bath Air Cleaner Assembly.  Good solid condition, but has some dings and small dents in areas-see photos.  Center Carb hole measures approx 4 3/16" in diameter.  Correct for '58 Chevy passenger cars w/ V8 engine and 4bbl carb.  Please check my other auctions.