Holley Carb rebuild kit. fits all 390-850 4150 Model Double Pumper Carburetors. This kit uses factory Holley parts as well as upgraded items such as:
Standard are high-flow .110” needle and seats.
Nylon reusable needle and seat gaskets.
Nylon reusable bowl screw gaskets.
Reusable bowl and metering block 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.
Only the highest quality components made.