The Holley EFI Vacuum Manifold is an excellent vacuum or boost reference source. 2018-ford-f-350-super-duty-esi7818551 125 in Holes - Stainless

125 in Holes - Stainless Hardware - Aluminum - Black Anodized - Each

Fitting - Adapter - Straight - 8 AN Male to 3/4 in NPT Male - Steel - Zinc Plated - Each

Timing Cover - 1-Piece - Aluminum - Polished - Big Block Chevy - Each

Fitting - Adapter - 45 Degree - 10 AN Female Swivel to 10 AN Female Swivel - Aluminum - Blue / Red Anodized - Each

The Holley EFI Vacuum Manifold is an excellent vacuum or boost reference source. 2018-ford-f-350-super-duty-esi7818551 125 in Holes - StainlessThe 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