Holley Standard Main Jets
Precision Fuel Metering Components
These metering orifices control fuel flow into the metering system and are rated in flow capacity "cubic centimeters per minute" for precise tuning purposes. The shape of the entry, exit, and size determines flow characteristics, ensuring optimal carburetor performance.
Key Features
- Flow Tested & Stamped: All Holley main jets are flow tested and stamped with the correct number for accuracy
- High Quality Construction: Manufactured from brass to high tolerances for consistency
- Easy Installation: Threaded design allows for easy installation and removal during tuning
- Standard Thread: Features 1/4"-32 UNF thread for universal compatibility
- Precise Orifice Size: .099" (0.0990") jet size for number 84 jets
Compatibility
Fits all Holley carburetor models: 2010, 2300, 4010, 4011, 4150, 4160 & 4500
Specifications
- Thread Size: 1/4"-32 UNF
- Jet Size: .099" orifice
- Material: Brass
- Quantity: Sold as a pair (2 jets)
- Fuel Type: Gasoline only - not for use with carburetors originally designed for alcohol
Note: Jet hole sizes are provided for reference only. All Holley jets are sized by actual flow and may vary from stated sizes.