Airaid Concept II carburetor air cleaner assemblies put a new twist on an old-school staple. These 14 in. air cleaner assemblies are constructed using hand-poured polyurethane that won't crack or shrink in underhood temperatures. Their SynthaMax filter features deep pleats to hold more dirt and extend service intervals. SynthaMax filters are 100 percent synthetic, require no oil, and feature a colorfast element dye that won't fade! Airaid Concept II carburetor air cleaner assemblies have an airflow-enhancing base and are topped with a beautiful, lightweight aluminum lid. These lids are ideal for applications with minimal hood clearance--they feature a curved top that enhances airflow and provides additional clearance for carb float bowl vents. A billet hold-down features a hidden stud with a flush mount hold-down and an included billet hex key tool. Airaid Concept II carburetor air cleaner assemblies are offered in a choice of sizes--they're the perfect finishing touch for your custom ride!