Holley Standard Main Jet #55
Product Overview
These precision metering orifices control fuel flow into the carburetor's 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 characteristics.
Features
- Flow Tested Quality: All Holley main jets are flow tested and stamped with the correct number for accurate identification
- Precise Threading: 1/4"-32 thread for easy installation and removal
- Professional Sizing: Size 55 with 0.054" orifice diameter
- Body Specifications: 3/8" (0.375") jet body diameter with 0.350" overall height
Compatibility
Fits all Holley carburetor models:
- Model 2010
- Model 2300
- Model 4010
- Model 4011
- Model 4150
- Model 4160
- Model 4500
Package Contents
- 2 main jets per package
- Factory stamped with size identification
Important Notes
Jet hole sizes are provided for reference only. All Holley jets are sized by actual flow and may vary from reference dimensions above. This ensures consistent performance across all applications.