2" Aluminum 4150 CNC Machined Carburetor Spacer Square Bore 4 Port Black
Spacers isolate carburetor from manifold, preventing horsepower-robbing heat transfer while also increasing air flow due to the increase in distance from the bottom of the carburetor to the manifold plenum. Spacers are precision CNC machined.Available in four hole versions for popular 4150 and 4500 Holley style carburetors in 1 inch, 1 1/2 inch and 2 inch thicknesses. Four hole spacers are additionally offered with specially contoured holes which helps increase air velocity under the carburetor.
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