NOTE: Raw vesion is pictured above with element - polished lid is shown on own in next pic.
Part#AS0148P-4brlFlat2 - Complete AussieSpeed 14 inch finned air cleaner. This polished 14 inch air cleaner has raised fins, a 2 inch element and comes complete with a filter and a zinc coated tin base to suit a 5 and 1/8 inch neck. This is your typical standard 4 barrel carb air cleaner neck size, which is common to Holley 2 barrel and 4 barrel carburettors, Edelbrock, Carter, Quadrajet, Demon, Barry Grant, Proform, etc.
This base is flat. It is not recessed it sits fairly level with the top of the carburettor air cleaner flange.