Feature 1Fitment: Replacement for HOLLEY; Replacement for FORD; Replacement for MOPAR; Replacement for CHRYSLER; Replacement for DODGE, etc. 2Applicable Model: Fits any square bore carburetor, like the replacement for Holley 4150 4160, for Barry Grant, for Carter and for Edelbrock that are used on many Small or Big Block engine. 3Improving Fuel Distribution: Square bore carburetor spacer is used to extend the length of the intake mixture column, thereby improving air and fuel distribution. 44 Hole Open Center: The open design increases the volume of the plenum chamber to increase RPM power, and the 4 hole design increases the mixing speed to improve low speed and mid range torsion. 5Reduce Fuel Temperature: The phenolic carburetor spacer reduces the fuel temperature inside the carburetor, bringing denser, more powerful fuel to the manifold.Item Type: CarburetorSpacerMaterial: PhenolicPlastics + MetalSize: Approx. 2in / 5cmFitment:Replacement for HOLLEY, Replacement for FORD, Replacement for MOPARFITS ANY SQUARE BORE CARBURETOR, like for Holley 4150 4160, for Barry Grant, for Carter and for Edelbrock that are used on many Small or Big Block, Replacement for Ford, Replacement for Mopar engines. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List3 x CarburetorSpacer4 x Screw4 x Gasket4 x Nut