I think this is for a Buick, possible 1928-1929 Buick air cleaner. It is in really good shape. Some dents. Size. on the bottom 4 inches across. Length 5 1/2 inches. small opening towards carb 1 3/4 inches.
There is number on the bottom #844676.
Would sell it for $40. dollars plus $5. shipping. email me if interested, thecalhoon1975@gmail.com Peter