For 1951-1956 Cadillac Oldsmobile Retro Air Cleaner Air Filter Set Black Coated

--For 1951-1956 Olds & Caddy air cleaner (most Holley, Quadrajet, Demon, and Edelbrock carbs). --It's even notched out in the back to clear a GM HEI distributor & will fit 5-1/8" carb neck. --Notched at rear for HEI distributor clearance --It uses an over-the-counter 14" x 4" replacement element. --4-5/8" carb to top of air cleaner assembly --5-3/32" carb to top of air cleaner nut --18-1/4" wide (not a scaled down version) --17-19/32" front to back length --Package: Including all items in the picture. Note: Professional Installation is Highly Recommended.