Advanced Engine Design 4150A Carburetor Rebuild Kit for Holley 4150 Alcohol Applications

The Advanced Engine Design 4150A is a premium carburetor rebuild kit specifically engineered for alcohol and E85 fuel applications on Holley 4150 double pumper carburetors. This comprehensive kit covers carburetors ranging from 390 to 1000 CFM, making it one of the most versatile alcohol rebuild kits available for performance and racing applications.

Designed for Alcohol Fuel Systems:

Unlike standard gasoline rebuild kits, the AED 4150A features components specifically selected to handle the unique demands of alcohol and methanol fuels. The kit includes a high-flow .130" needle and seat assembly optimized for alcohol's different flow characteristics and corrosive properties.

Complete Kit Includes:

• .130" high-flow alcohol-specific needle and seat
• Nylon reusable needle and seat gaskets for reliable sealing
• Nylon reusable bowl screw gaskets to prevent leaks
• New brass idle mixture screws for precise adjustment
• New needle and seat nuts and mounting screws
• New accelerator pump squirter check valves
• Special no-leak fuel inlet gaskets
• Non-stick bowl and metering block gaskets

AED Performance has engineered this kit to include premium components that many racers typically purchase separately, providing exceptional value and convenience. This kit is ideal for drag racing, circle track, pulling competitions, and other high-performance alcohol-fueled applications where reliability and consistent performance are critical.

Note: This double pumper kit does not include vacuum secondary diaphragms, as it is designed specifically for mechanical secondary carburetor applications.