Holley Hi-Ram Intake Plenum Top Only-Black Finish - Hi-Ram, Plenum Top Only, Blank Flange

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Overview Fits Holley Hi-Ram Manifolds-Holley has launched new black ceramic coated plenum tops to match our Hi-Ram manifold bases! | They are available in the dual 4150 throttle bo dy pattern or in a full blank top so that you can design your our system. The plenum tops are constructed of cast aluminum. Hi-Ram, Plenum Top Only, Blank Flange Features Modular Design w/ Removable Top A-B Height: 12.10” (w/ Carb Style Top - 2 x 4150 or 2 x 4500) – See Drawing Height at Plenum Flange: 9.44” O-Ring Seals for Plenum Top Show more