121-7 Discharge Nozzle Screw Hollow

Name: 121-7 Discharge Nozzle Screw Hollow
Brand: HOLLEY
SKU: 510-121-7
Price: 20.90 USD
Availability: InStock

^$20⁹⁰

3 left in stock

Ships on Nov 02, 2026

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^$6⁶⁰

555-150275

High Flow Nozzle Squirter Screw Stainless Steel

^$14³⁰

Discharge Nozzle Screw

Discharge Nozzle Screw

Hollow

.070" Hole Size

Designed for nozzle sizes .040 & up

Holley 121-7 Features:

Designed for nozzle size .040 & up

Genuine Holley Quality Parts

A wide selection of discharge nozzle sizes is invaluable to properly tune an accelerator pump system. The hole size determines the rate of discharge. A larger hole will shoot fuel at a faster rate with less pressure than a smaller hole. Nozzle sizes are stamped on each shooter (for example, a 31 stamp indicates a hole size of .031''). Two gaskets included unless otherwise noted

Fine-tune your engine’s throttle response with Holley Accelerator Pump Discharge Nozzles, designed to deliver precise fuel bursts when you hit the gas. Whether you're upgrading your street machine or dialing in a race-ready setup, these nozzles play a critical role in eliminating hesitation and improving off-the-line acceleration. Built to Holley’s exacting standards, these discharge nozzles provide consistent fuel delivery during throttle transitions, ensuring smoother operation and stronger performance. Available in a variety of Holley accelerator pump nozzle sizes, they let you match fuel output to your specific carburetor and engine combination. This means less bog, better launches, and a more responsive driving experience overall. Perfect for tuning your Holley carburetor, these nozzles are engineered to fit securely and resist clogging or fuel disruption. They’re a must-have for enthusiasts who want maximum control over low-RPM performance and drivability. If you're experimenting with different Holley carb squirter sizes, these nozzles allow for easy swaps to help you find the perfect setup for your ride. Whether you’re chasing quicker ETs or just want your street car to respond better under acceleration, a properly matched Holley accelerator pump nozzle can make all the difference. At JEGS, we offer a full range of sizes and expert support to help you tune with confidence. Explore our selection of Holley accelerator pump discharge nozzles today and unlock sharper throttle response with every hit of the pedal.