Hi-Ram, Plenum Top Only, 2 x 4150;
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 body pattern or in a full blank top so that you can design your system. The plenum tops are constructed of cast aluminum.;
- Modular Design w/ Removable Top
- Made of aluminum, black in color
- Height at Plenum Flange: 9.44”
- O-Ring Seals for Plenum Top
