Feature:1. Fitment: Replacement for ; Replacement for ; Replacement for ; Replacement for ; Replacement for , etc.2. Applicable Model: Fits any square bore carburetor, like the replacement for 4150 4160, for Barry Grant, for carter and for that are used on many Small or Big Block engine.3. Improving Distribution: Square bore carburetor spacer is used to extend the length of the intake mixture column, thereby improving air and distribution.4. 4 Hole Open Center: The open design increases the volume of the plenum chamber to increase , and the 4 hole design increases the mixing speed to improve low speed and mid for range torsion.Specification:Item Type: Carburetor SpacerMaterial: Phenolic Plastic + MetalSize: . 2in / 5cmFitment:Replacement for , Replacement for , Replacement for FITS ANY SQUARE BORE CARBURETOR, like for 4150 4160, for Barry Grant, for carter and for that are used on many Small or Big Block, Replacement for , Replacement for engines.Color: BlackPackage Contents:4 x Screw3 x Carburetor Spacer4 x NutOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.