Holley 122-40 Carburetor Standard Main Jet Tire Pressure Monitoring Systems Bigger and Sturdier: Larger dimensions

Bigger and Sturdier: Larger dimensions and robust materials ensure this organizer does not collapse under load

Finished with rear exit

This 1 PT bottle is an essential addition for vehicle maintenance

all-weather cover ensures your car remains safe from the elements

Upgrade your Chevrolet or GMC truck today with this reliable and efficient lighting solution

Holley 122-40 Carburetor Standard Main Jet Tire Pressure Monitoring Systems Bigger and Sturdier: Larger dimensionsThese metering orifices control fuel flow into the 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. All Holley Main jets are flow tested and then stamped with the correct number.