Holley Adjustable Needle and Seat - 0.097 Orifice - Viton - Holley Carburetors 20-PRY-NB-2XS Fits Mot 2bbl And 4bbl

Fits Mot 2bbl And 4bbl Carbureted Applications

MW Precision Series

1983-1990 Ford E-250 Econoline Club Wagon

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Holley Adjustable Needle and Seat - 0.097 Orifice - Viton - Holley Carburetors 20-PRY-NB-2XS Fits Mot 2bbl And 4bblHolley offers a number of needle and seat assemblies for its carburetors. The configuration of the needle and seat assembly and its seat size depend on carburetor application, CFM size and type of fuel bowl used. Operation is simple. Needle movement is controlled by a metal tang on the float arm. Upward movement of the float causes the needle to close the seat; downward float movement causes the needle to open the seat. Seat size determines how much