Holley 121-228 | Carburetor Accelerator Pump Nozzle

Part Number
Accelerator Pump Discharge Nozzle
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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.

BRAND: Holley


  • Includes 2 Gaskets
  • Accelerator Pump Discharge Nozzle| 0.028 in. Hole Size| Anti-Pullover Type| Incl. 1 Nozzle/2 Gaskets|
  • 0.028 in. Hole Size
  • Accelerator Pump Discharge Nozzle
  • Accelerator Pump Parts
  • Anti-Pullover Type
  • Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles| Uncontrolled (Non-Emissions Controlled) Vehicles| and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations
  • Accelerator Pump Discharge Nozzle 0.028 in. Hole Size Anti-Pullover Type Includes 2 Gaskets


Nozzle Size0.028 in.
WARNING CA Proposition 65No

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