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    Holley Accelerator Pump; Discharge Nozzle

    Part #121-131
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    • Product Details

      Part No.121-131

      Warranty Details (90 DAY REPLACEMENT IF DEFECTIVE)

      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-inches. Various styles of nozzles are offered by Holley.

      Product Features:

      • Includes 2 Gaskets

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