HLY121-25 Holley Tube Style Accelerator Pump Discharge Nozzle

Tube Type Accelerator Pump Discharge Nozzle 0.025 in. Hole Size. Includes 2 nozzles and 4 gaskets.

A good selection of accelerator pump discharge nozzle sizes is indispensable to the proper tuning of the accelerator pump system The nozzle hole size determines the rate of fuel discharge A larger hole will "shoot" the fuel at a faster rate, and with less pressure, than a smaller hole Sizes are stamped on each nozzle For example, the number "31" indicates that the nozzle hole size is 031" Various styles of nozzles are offered by Holley.

Includes 2 nozzles and 4 gaskets. used on Holley models 4150, 4160 and 4500.

See links below for other nozzle sizes