4500 Drop Base Air Cleaner Black w/3 Red Washable Gauze Filter 16 X 3 Chrome or EDP Black Drop-Base Air Cleaner for 4500 Series Carburetors with 7-1/4 Diameter Neck HolleyHolley is proud to offer a breath of fresh air with our new 16 inch drop base 4500 air cleaner assemblies and filters. Available in chrome or Edp black. The assemblies are available with a red washable gauze element or a white pleated paper element to offer the look you have in mind. The tops are so large and smooth we decided to leave them plain for a nice stealth look, or to use as a canvas for creating your own look. They feature a 15 16 inch drop