Enhance your engine's performance with this 1-inch carburetor spacer designed for square bore applications. Precision-crafted from lightweight yet durable aluminum, this open center spacer creates optimal airflow between your carburetor and intake manifold. The spacer helps improve fuel atomization and provides better throttle response by creating additional plenum volume. Its open center design promotes even air distribution while maintaining consistent fuel mixture. Perfect for automotive enthusiasts looking to fine-tune their engine's performance, this spacer is engineered to exact specifications for reliable fitment. The aluminum construction offers excellent heat dissipation properties while keeping weight to a minimum. Installation between the carburetor and intake manifold creates the ideal spacing for enhanced engine efficiency. Material: Aluminum. Thickness: 1" Thick. Type: Open Center Vacuum Port: Yes (3/8" Fitting) Kit Includes: 1 - Aluminum Spacer w/Vacuum Port 2 - Carb Fibre Gaskets 4 - Dual Thread Longer Carb Studs 4 - Nuts 4 - Washers