Holley EFI Vacuum Manifold 534-52 accessory-lighting 7 V8 1977 - 1985

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Holley EFI Vacuum Manifold 534-52 accessory-lighting 7 V8 1977 - 1985The Holley EFI Vacuum Manifold is an excellent vacuum or boost reference source. Features: Compatible with all transducers that utilize 1 8 NPT male threads and 7 8? or smaller body hex diameter 12 independent 1 8 NPT ports 2 6 ORB Ports Improve engine bay organization by mounting transducers and or vacuum lines all in one easy to reach location Ideal for engines that require multiple vacuum boost reference sources 4 mounting holes designed for the