HENKYO Holley Accelerator Pump Nozzle Set for Holley 4150/4160/4500 Carburetors – 4 Pcs (0.031–0.037in)
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Description
xOverview
The HENKYO Holley accelerator pump nozzle set is designed to bring measured, reliable fuel delivery to Holley carburetors. This four-piece kit includes discharge sizes of 0.031in, 0.033in, 0.035in, and 0.037in, offering you options to fine‑tune the spray for Holley 4150/4160/4500 models. One order covers all four sizes, making it simple to experiment and tune across different setups.
Quality and construction
Crafted from brass, these nozzles resist corrosion and maintain a smooth flow path. They are produced with high‑precision CNC turning from Japan, delivering tight tolerances and consistent dimensions. The included gasket supports a reliable seal and durable performance when replacing worn parts.
Why brass and precision manufacturing matter
- Brass offers durability and a stable flow path suitable for frequent use.
- Japan‑built CNC turning yields precise diameters and clean surfaces for consistent discharge.
What’s included and how to use
- Four brass nozzles: 0.031in, 0.033in, 0.035in, 0.037in — tailored for different tuning needs.
- One gasket included to help seal the discharge path during installation.
- Compatible with Holley 4150/4160/4500 carburetors; straight jets support straightforward metering.
Real‑world use and tips
In classic car restorations or performance tweaks, a compact nozzle set like this enables careful experimentation with fuel delivery during acceleration. The multi-size pack makes it easy to compare how small changes affect throttle response, drivability, and overall feel without sourcing multiple parts separately.
Practical guidance
- Start with 0.033in or 0.035in for a balanced throttle response and fuel spray.
- Install the gasket to maintain a secure seal and reduce potential leaks.
- Keep notes on engine behavior when swapping sizes to guide future tuning decisions.
FAQ
Q: Which Holley carburetors are compatible with this nozzle set?
A: Designed for Holley 4150, 4160, and 4500 carburetors with straight jets.
Q: What does the package include?
A: Four brass nozzles (0.031in, 0.033in, 0.035in, 0.037in) plus one gasket.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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