The Edelbrock Signature Series Triangular Air Cleaner is a new style with a shape reminiscent of the muscle car era. The Edelbrock signature and styling coordinate beautifully with the Edelbrock Signature Series valve covers. This triangular air cleaner comes with high quality 2-1/2 inch washable, pre-oiled cotton gauze filter for excellent filtration. The top and base of the air cleaner is made of steel material with a chrome finish. The standard wing nut color is z These quality air cleaners are stamped from 18-gauge steel and triple chrome-plated for a high quality finish and a great look.