36-181 Main Jet Assortment Kit Replacement For Holley - Main Jet Set

In this review the 36-181 Main Jet Assortment Kit Replacement For Holley is evaluated for tuners and mechanics who need a comprehensive selection of main jets. The bottom line: this kit is for anyone rebuilding or tuning Holley carburetors and wants a full set of correctly threaded brass jets to match Holley aperture specs. It stands out because it supplies two of each size from 64 to 99 with 1/4 -32 thread, individually labeled for quick identification and easy access during a rebuild or on-the-car tuning session.

Key Features

• Complete size range: Includes two of each brass jet sizes 64 through 99 to cover a wide range of tuning needs without hunting individual jets.
• Correct thread standard: Jets use the 1/4 -32 thread common to Holley main jets, so they fit Holley models listed without thread adapters.
• Individually packaged: Each jet size is labeled and stored in the plastic inner box, which simplifies selection and reduces risk of cross-contamination during rebuilds.
• Instruction included: Jet aperture size comparison instructions are provided so users can confirm sizes and follow Holley spec guidance while tuning.
• Compatibility listing: Specifically compatible with Holley Model 2010, 2300, 4010, 4011, 4150, 4160, and 4500 carburetors, making it suitable for many rebuild projects.

Who It's For

This assortment kit is aimed at DIY mechanics, restoration hobbyists, and professional tuners who work on Holley carburetors and value having a broad selection of main jets on hand. Its labeled packaging and included aperture comparison instructions make it useful during bench rebuilds or when testing jets on the vehicle.

It is less appropriate for users who need jets with nonstandard threads or for those who only need one or two specific sizes; this kit assumes you want a comprehensive set and the spare jets that come with it.

Pros & Cons

Pros

• Wide selection of main jet sizes 64-99, providing flexibility for tuning a variety of engines.
• Each jet is brass and supplied with a Holley-compatible 1/4 -32 thread for reliable fitment.
• Neatly organized and labeled in a plastic inner box, which speeds up selection during assembly.
• Includes aperture comparison instructions to verify sizes against Holley specs.

Cons

• Kit only contains jets with 1/4 -32 thread, so it will not work where different thread standards are required.

Specifications

Product type	Main jet assortment kit
Jet sizes	Sizes 64 through 99 (two each)
Quantity of jets	Total 72 jets (2 each of 36 sizes)
Thread size	1/4 -32
Material	Brass jets
Compatible carburetors	Holley 2010, 2300, 4010, 4011, 4150, 4160, 4500
Packaging	Individually labeled plastic inner box with instructions

Our Verdict

The 36-181 Main Jet Assortment Kit Replacement For Holley is a practical, value-minded choice for anyone rebuilding or tuning Holley carburetors because it supplies the common jet sizes, correct 1/4 -32 thread, and organized packaging for quick selection. It saves time when testing multiple jets and is a good investment if you want a ready stock of main jets compatible with the listed Holley models.

Frequently Asked Questions

Will these jets fit my Holley 4150 carburetor?
Yes. The kit lists compatibility with Holley Model 4150 and uses the 1/4 -32 thread specification common to those jets.

How many of each jet size are included?
The kit includes two of each jet size from 64 through 99, for a total of 72 jets.

Are the jets labeled for easy identification?
Yes. Jets are individually packaged and labeled in a plastic inner box and include aperture comparison instructions to confirm sizes.