--Polished aluminum, in between the fins are polished.
--This is a new polished aluminum 11-7/8" x 8-1/4" x 3" oval air cleaner kit.
--Polished Aluminum Half Finned Style Top.
--Aluminum raised base to raise the air cleaner above the carb flange.
--Stainless bolt for mounting included.
--Meets the requirement for most stock and aftermarket carburetors with a 5 1/8'' diameter carb neck. Like most Carter, Edelbrock, Holley, Rochester, and Quadrajet four barrel carburetors.
--Note:If item's diameter is too small to fit Carb Base, some grinding work might be involved.
--Package: Including all items in the picture.
Note: Professional Installation is Highly Recommended.