Holley Main Jets 64 #122-64

In stock

Holley Carburetor Jets, Holley Number 64, Hole Size .064", Pair#122-64

These metering orifices control fuel flow into the metering system. They are rated in flow capacity "cubic centimeters per minute" and are changeable for tuning purposes. The shape of the entry, exit, and size determines flow. All Holley Main jets are flow tested and then stamped with the correct number. 


  • Fits All Holley Model 2010, 2300, 4010, 4011, 4150, 4160 & 4500
  • Sizes from 40-110
  • 1/4-32 Thread
  • .064" Jet size
  • Standard Main Jet
  • Jet Hole sizes provided for reference only. All Holley jets are sized by actual flow and may vary from sizes above.

Specifications :

Product Type: Carburetor Jets

Product Line: Holley Standard Main Jets

Jet Fuel Type: Gasoline

Jet Size: 64

Jet Drill Size: 0.0640"

Jet Material: Brass

Thread Size: 1/4".-32

Quantity: Sold as a Set

Notes: Not for use with carburetors originally designed for alcohol.

More Information
Part Type Carburettor Tuning Components & Tools
Product Line Carburettors & Accessories
Brand Holley
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