Holley EFI - The Holley EFI Vacuum Manifold is an excellent vacuum or boost reference source. Cylinder Head - Muscle Series

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Holley EFI - The Holley EFI Vacuum Manifold is an excellent vacuum or boost reference source. Cylinder Head - Muscle SeriesThe Holley EFI Vacuum Manifold kit is designed for those of you wanting a simple and clean solution for plumbing either vacuum or boost referenced sources. This manifold block features 12 1 8th NPT ports that can be plumbed with most common EFI transducers such as the Holley 554 102 0 100 psi transducer. It also features 2x 6 O ring boss AN Ports, ensuring your manifold block has an excellent vacuum or boost reference source. Improve your engine bay