Allstar Performance ALL25983 4150 0.500" 4-Hole Hi-Flow Carburetor Spacer .5in 4 Hole

• Package Dimensions: 0.762 H x 27.177 L x 20.32 W (centimetres)
• Country of Origin : United States
• Package Weight: 0.6 pounds
• Fit type: Vehicle Specific

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 in the U.S. from a state-of-the-art polymer compound and can withstand temperatures up to 400deg F. Available in open or four hole versions for popular 4150 and 4500 Holley style carburetors in 1/2 inch, 1 inch and 2 inch thicknesses. Four hole spacers are additionally offered with specially contoured holes which helps increase air velocity under the carburetor.