This ultimate performance rebuild kit is designed to fit all Holley 4150 series carburetors and is ideal for refreshing worn components while improving reliability and fuel control. AED combines a full range of upgraded internal parts into one complete kit, eliminating the need to source individual components separately. It’s a great choice for street, strip, or performance applications where consistent operation and leak-free sealing matter.

This kit is intended for Holley 4150-style carburetors. Double pumper versions do not include vacuum secondary diaphragms and the kit includes one power valve.

• Fits Holley 4150 series carburetors
• Complete ultimate performance rebuild kit
• Includes high-flow needle and seat assemblies
• Nylon reusable needle and seat gaskets
• Nylon reusable bowl screw gaskets
• New brass idle mixture screws
• New needle and seat nuts and screws
• New accelerator pump squirter check valves
• Special no-leak fuel inlet gaskets
• Non-stick bowl and metering gaskets
• Designed to improve durability and sealing
• Sold as a complete kit