121-128 Holley Pump Discharge Nozzle
121-128 Holley Pump Discharge Nozzle
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121-128 Holley Pump Discharge Nozzle
Optimize the performance of your Holley carburetor with the 121-128 Holley Performance Accelerator Pump Discharge Nozzle. A precise selection of accelerator pump discharge nozzle sizes is crucial for effective tuning of your accelerator pump system. This nozzle is designed to enhance fuel discharge efficiency, ensuring your engine runs at its best.
Key Features:
- Optimized Fuel Discharge: The nozzle hole size directly affects the rate of fuel discharge, allowing for tailored performance.
- Larger Hole Design: A larger hole enables faster fuel delivery at a lower pressure, improving engine response.
- Compatible Models: Specifically designed for Holley Model 4150, 4160, and 4500 carburetors for seamless integration.
- Includes Gaskets: Comes complete with gaskets to ensure a perfect fit and prevent leaks.
- Durable and Reliable: Each nozzle size is clearly stamped, providing you with confidence in your selection.
- Limited 90 Day Warranty: Enjoy peace of mind with our warranty, ensuring quality and reliability.
Specifications:
- Nozzle Size: 0.028 Inch
- Number of Nozzles: 2
Upgrade your carburetor system today with the 121-128 Holley Pump Discharge Nozzle and experience enhanced performance like never before!
Shipping & Returns
Shipping & Returns
📦 Shipping:
Orders are processed within 1–2 business days. Standard delivery takes 3–7 business days, depending on your location.
↩️ Returns:
You may return or exchange products within 60 days of receiving your order. Items must be in original condition with proof of purchase. If your item is defective or damaged due to manufacturing issues, we’ll replace it at no additional cost.

