This all steel air cleaner is based off the 1951-1956 Olds & Caddy air cleaner.

 It uses an over-the-counter 14" x 4" replacement element.

 It's even notched out in the back to clear a GM HEI distributor & will fit 5-1/8" carb neck (most Holley, Quadrajet, Demon and Edelbrock carbs).

• 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
• Notched at rear for HEI distributor clearance