Holley Carburetor Standard Main Jet 57

Overview

These metering orifices control fuel flow into the metering system and are rated in flow capacity "cubic centimeters per minute" for precise carburetor tuning. The shape of the entry, exit, and size determines flow characteristics.

Features

Precision Manufacturing: All Holley main jets are flow tested and stamped with the correct number for accuracy
High-Quality Brass Construction: Manufactured to high tolerances for consistency
Easy Installation: Threaded design for easy installation and removal
Professional Grade: Designed for both street and race performance applications

Specifications

Jet Size: 57 (0.056" drill size)
Thread Size: 1/4-32 unified fine thread
Material: Brass
Quantity: Sold as a pair
Fuel Type: Gasoline

Compatibility

Fits all Holley carburetor models:

2010
2300
4010
4011
4150
4160
4500

Important Notes

Jet hole sizes provided for reference only
All Holley jets are sized by actual flow and may vary from reference sizes
Not for use with carburetors originally designed for alcohol
Legal for use on emissions controlled vehicles, uncontrolled vehicles, and racing applications