Since founder Vic Edelbrock Sr. began building performance intake manifolds in 1938, Edelbrock has grown into one of the most trusted names in American high-performance parts, from carburetors and intake manifolds to cylinder heads, crate engines, and EFI systems. JEGS has spent decades supplying Edelbrock components to racers, engine builders, and street enthusiasts, backing this extensive lineup with in-house technical support, fast shipping, and a Price Match Guarantee so you can choose proven Edelbrock parts with confidence.

You need to have this to eliminate vacuum leaks when installing a square flange carburetor on an aftermarket intake with dual square bore/spread bore flange or for a spread bore carburetor on an Edelbrock intake manifold that does not have a regular mounting flange!