This 0.500 inch thick phenolic carburetor spacer is designed for Holley 4150 square bore carburetors and features an open plenum for increased airflow. Intended for drag race applications, it helps reduce heat transfer from the intake manifold to the carburetor while increasing plenum volume for improved top-end performance.
• Fits Holley 4150 square bore carburetors
• Open plenum design
• 0.500 in thickness
• Phenolic construction to reduce heat soak
• Black, natural finish
• Drag race use only
Notes
• Gaskets not included
• Mounting hardware not included
• Sold individually