Holley Standard Main Jet #85 (HO122-85)
Overview
These precision metering orifices control fuel flow into the carburetor metering system. They are rated in flow capacity "cubic centimeters per minute" and are changeable for tuning purposes.
Key Features
- Material: Brass construction for durability and corrosion resistance
- Thread Size: 1/4-32 unified fine thread for easy installation and removal
- Hole Size: 0.0985" (2.5mm) precisely drilled orifice
- Flow Rating: Size 85 flow capacity
- Precision Manufacturing: All Holley main jets are flow tested and stamped with the correct number
- High Tolerance: Manufactured to strict tolerances for consistent performance
Compatibility
Fits all Holley carburetor models:
- 2010
- 2300
- 4010
- 4011
- 4150
- 4160
- 4500
Technical Details
The shape of the entry, exit, and orifice size determines fuel flow characteristics. All Holley jets are sized by actual flow testing and may vary slightly from nominal drill sizes to ensure accurate flow ratings.
Note: Jet hole sizes are provided for reference only. All Holley jets are sized by actual flow capacity and may vary from listed drill sizes.
Package Contents
Sold as a pair (2 pieces)