Designed to bolt between the 4150 flange intake manifold and throttle body. Mounts one solenoid in a center location below the throttle body flange. EFI 4150 Flange EFI 4150 Flange Specific. Specifically for tall EFI manifold applications and commonly used in conjunction with Nitrous Outlet's Puck Systems, spray bar system, or Stinger plate system.
