2 MULE TEAM Main Jet Assortment Kit for Holley Carburetors — 72-piece #64–#99 Brass, 1/4-32

High-quality 2 MULE TEAM 36-181 brass main jet assortment supplies a complete range of #64–#99 jets (1/4-32 thread) to tune, repair, or upgrade compatible Holley carburetors.

Whether you’re dialing in a race motor, restoring a classic, or keeping a daily driver running smoothly, the right main jets are essential for correct fuel metering. This 72-piece set from 2 MULE TEAM bundles two full sets of jets in sizes #64 through #99, built from solid brass and stored in a labeled plastic organizer so you can swap and test jets quickly at the bench or track.

Which carburetors will this main jet assortment work with?

This kit was made for common Holley models and matches the 1/4-32 thread standard used by those carbs. It’s appropriate for a wide variety of applications where those Holley models are installed.

• Compatible with Holley 2010, 2300, 4010, 4011, 4150, 4160, and 4500 series.
• Includes sizes #64–#99 to cover rich and lean tuning needs.
• Threads fit standard 1/4-32 main jet bores used in these Holley carbs.

How does the kit help with tuning and maintenance?

The assortment lets you change to incremental jet sizes to find the best air/fuel ratio without guessing. Having clearly labeled compartments speeds selection and prevents cross-contamination during rebuilds or dyno work.

• Two complete sets allow quick swaps or spare inventory for multiple carbs.
• Labeled plastic organizer keeps each jet visible and separated by size.
• Solid brass construction resists corrosion for long-term, repeatable use.

What are the build quality and specifications of these jets?

Each jet is machined from solid brass for dimensional stability and corrosion resistance under typical fuel and environmental conditions. The kit covers a broad numeric range in small steps so you can fine-tune mixture across operating conditions.

• Material: high-quality solid brass for durability and accurate metering.
• Size range: #64 through #99 in standard increments for precise tuning.
• Thread: 1/4-32 to match factory main jet threads for listed Holley models.

How should I use this kit safely and effectively?

Confirm your carburetor model and jet thread size before installing to avoid mismatches. Replace jets with the engine off and cooled, keep passages clean, and test in incremental steps to achieve safe, reliable tuning—avoid extreme lean settings without proper monitoring.

• Verify carburetor model (Holley series listed) and thread standard (1/4-32).
• Work with the engine off, and use a clean workspace to prevent debris entry.
• Make stepwise size changes and test under realistic operating conditions.

Who is this for: The 2 MULE TEAM 36-181 main jet assortment suits mechanics, restorers, racers, and weekend tuners who need a comprehensive set of replacement jets for Holley-style carburetors. If you perform carburetor rebuilds, dyno tuning, or keep spares on hand for trackside adjustments, this organized brass kit gives the range and durability required for repeatable, precise fuel-metering work.