JET Primary Jet 76

The JET Primary Jet 76 is a precision carburetor jet designed by JET Performance for tuning and optimizing fuel delivery in modified engines. This component is essential for anyone upgrading their carburetor system, whether you're building a street engine, preparing for competition, or restoring a classic vehicle with performance aspirations.

The primary jet controls the fuel mixture during cruise and light throttle operation, making it critical for both driveability and fuel economy. Manufactured to exacting tolerances, the JET Primary Jet 76 delivers consistent metering that directly impacts how your carburetor responds across the rpm range. The size designation (76) refers to the jet's orifice diameter, which restricts fuel flow at a specific rate—larger numbers allow more fuel, while smaller numbers lean out the mixture.

This jet is ideal for carburetor modifications where factory jetting falls short or where engine modifications (intake, exhaust, or displacement changes) require richer or leaner calibration. Mechanics and enthusiasts commonly use JET Performance jets when upgrading from stock equipment or fine-tuning dual-carb setups. Installation is straightforward—simply remove the old jet and install the new one in the carburetor's primary circuit.