Holley Performance Carburetor Metering Jet (MPN: 122-78)

Precision-engineered jets for optimal fuel flow control in Holley carburetors.

The Holley Performance Carburetor Metering Jet is designed to regulate fuel flow into the metering system of various Holley carburetors. With a hole size of 0.0870 inches, these brass jets are essential for tuning the fuel delivery to achieve desired performance levels. Each jet is flow tested to ensure accuracy and is stamped with its flow capacity for easy identification.

These metering jets are compatible with Holley models 2010, 2300, 4010, 4011, 4150, 4160, and 4500, making them versatile components for a range of applications. The standard main jet design allows for straightforward installation and replacement, ensuring that users can easily adjust their carburetor settings as needed. The changeable flow capacity of these jets provides the flexibility required for fine-tuning fuel delivery based on specific performance requirements.

Constructed from durable brass, these jets are built to withstand the rigors of high-performance environments. The 1/4 Inch-32 UNF thread size ensures a secure fit within the carburetor, contributing to reliable operation. This set of two metering jets is an essential addition for those looking to optimize their Holley carburetor's performance.

Features

• Control Fuel Flow Into The Metering System
• All Holley Main Jets Are Flow Tested And Then Stamped With The Correct Number
• Standard Main Jet
• Flow Capacity Are Changeable For Tuning Purposes

Specifications

• Manufacturer: Holley Performance
• Manufacturer Part Number: 122-78
• Compatibility: Holley Model 2010, 2300, 4010, 4011, 4150, 4160 And 4500 Carburetor
• Type: Main Jet
• Fuel Type: Gasoline
• Jet Drill Size: 0.087 Inch
• Quantity: Set Of 2
• Thread Size: 1/4 Inch-32 UNF
• Material: Brass

Technical Documents

• brand_warranties.pdf