1) This all-steel air cleaner is based on the 1951-1956 Olds & Caddy air cleaner.

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

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

4) 4-5/8" Carb to top of air cleaner assembly.

5) 5-3/32" Carb to top of air cleaner nut.

6) 18-1/4" Wide (not a scaled-down version).

7) 17-19/32" Front to back length.

8) Notched at the rear for HEI distributor clearance.

9) Package Includes: As shown in our pictures.

This Item Doesn't Come With Installation Guides. We Highly Recommend Professional Installation.