AegisAutos Holley Main Jet Kit 72-Piece (64–99) — Brass Jets, Numbered Case for 2010/2300/4150/4500

AegisAutos 72-piece main jet kit supplies every brass jet from size 64 through 99 (two of each) so you can precisely tune Holley carburetors 2010/2300/4150/4500 for proper fuel metering.

If you work on classic or performance engines with Holley carburetors, gaining fine control of fuel delivery is essential. This kit gathers the most commonly used main jet sizes into a numbered plastic case, letting you swap jets quickly during dyno sessions, track days, or street tuning. The jets are machined from brass for corrosion resistance and repeatable fit, and the assortment covers a wide span so you rarely need to hunt for a single size.

Which Holley models does this jet kit fit?

The set is designed for mainstream Holley carburetors including model numbers often installed on street and race engines. It covers older and contemporary variants that use 1/4''-32 threaded main jets, making it compatible with many 2010, 2300, 4010/4011, 4150/4160 and 4500 series carbs. Always confirm the thread spec and jet style on your carb before ordering to ensure a correct fit.

• Compatible with Holley 2010 and 2300 series carburetors
• Fits 4010, 4011, 4150, 4160 and 4500 model families
• Standard thread: 1/4"-32 (confirm on your carb)
• Includes two jets per size for quick swaps or spares

How does this kit help during tuning sessions?

Having a graduated selection of main jets lets you change fuel flow in measured steps to find the best air/fuel ratio under varying load and rpm. The plastic storage case is numerically labeled so you can track which jets you tried and return to a known baseline quickly. Carrying duplicates means you can test one jet on the bench while another is installed on the car.

• Two jets of each size (64–99) for redundancy or staged testing
• Numbered compartments speed selection and record-keeping
• Brass construction offers consistent threads and longevity
• Wide size range reduces the need to source individual jets

What are the construction and storage details?

The jets are precision-formed from brass to resist wear and provide smooth seating in threaded wells. They come organized in a molded plastic case with individual chambers and printed size markings, protecting parts from damage and preventing loss. The compact case fits in a toolbox or under-hood service kit for on-site adjustments.

• Material: high-quality brass for corrosion resistance
• Storage: molded plastic case with individual numbered slots
• Thread size: 1/4"-32 to match common Holley main jets
• Total pieces: 72 jets (2 of each size between 64 and 99)

What practical limits should I know before buying?

While this kit covers the most frequently required main jet sizes, some bespoke or rare carburetors may use different jet types or thread pitches. It does not include idle, air bleed, or emulsion tubes—only main jets. If you are unsure which jet family your carb uses, consult the carburetor stampings or a service manual before purchase.

• Does not include idle or bleed jets—main jets only
• Confirm your carb’s thread pitch and jet style prior to purchase
• Ideal for most Holley 2010/2300/4150/4500 applications, not every specialty carb
• Customer service available if you need help identifying the correct model

Who is this for: This AegisAutos main jet assortment is aimed at DIY mechanics, engine tuners, race teams, and restoration enthusiasts who service Holley-equipped engines and need a broad, reliable selection of brass main jets. If you perform dyno tuning, engine swaps, or routine carburetor maintenance and want a compact, labeled kit that reduces downtime, this set provides practical coverage and easy organization.