Holley Performance 122-66 Carburetor Metering Jet
Holley Performance 122-66 Carburetor Metering Jet
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Holley Performance 122-66 Carburetor Metering Jet

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Key item features

  • Broad Compatibility: This metering jet is designed to fit a wide range of Holley carburetor models, including 2010, 2300, 4010, 4011, 4150, 4160, and 4500 series.
  • Precise Dimensions: Featuring a 1/4-32 thread and a .066 inch jet size, this component is a standard main jet for Holley carburetors.
  • Flow Control: These metering orifices are crucial for regulating fuel flow into the carburetor's metering system, enabling precise tuning.
  • Varied Sizing: Available in a range of sizes from 40 to 110, offering flexibility for different performance requirements.
  • Flow Rated: All Holley main jets are meticulously flow tested and then stamped with their corresponding number to ensure accurate flow capacity.
  • Tuning Purpose: The jets are changeable, allowing for fine-tuning of the carburetor's fuel delivery system to optimize engine performance.
  • Design Influence: The shape of the entry, exit, and overall size of the jet directly determine its fuel flow characteristics.
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