Holley Main Jets 66 #122-66 4338580 Vacuum secondaries for use on

Vacuum secondaries for use on wide variety of vehicles

The body comprises a gripping surface designed for optimum torque transmission with handling accuracy

This solenoid can be used for racing or for street applications

This product has the following approvals: GM dexos1:GEN2 Licensed

1 of #1 x 100mm

Holley Main Jets 66 #122-66 4338580 Vacuum secondaries for use onThese 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. Standard Main Jet . 066" Jet size 1 4 32 Thread Sizes from 40 110 Fits All Holley Model 2010, 2300, 4010, 4011, 4150, 4160 & 4500