Description
Hi-Ram, Plenum Top Only, Blank FlangeModular Design w/ Removable TopA-B Height: 12.10â? (w/ Carb Style Top – 2 x 4150 or 2 x 4500) â?? See DrawingHeight at Plenum Flange: 9.44â?O-Ring Seals for Plenum TopFits 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 body pattern or in a full blank top so that you can design your our system. The plenum tops are constructed of cast aluminum.





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