Adapts Holley® 4412 Series 2bbl to a Holley® 4150/4160 4bbl square flange manifold bolt pattern. Sold individually.; Carburetor Adapter for Holley® 4412 Series 2bbl to a Holley® 4150/4160 4bbl square flange manifold bolt pattern. Billet Aluminum material construction includes mounting hardware and Heli-Coiled Threads.;.
