Holley Carburetor Standard Main Jet #109, .150" 31014BK With a maximum pressure rating

With a maximum pressure rating of 350 psi and an operating temperature range of -40° F to +300° F

Stable Friction OutputHawk Performance's leading-edge brake friction technology is proven everyday in severe-duty motorsports and performance street brake applications

these aluminum heads provide impressive torque figures at higher rpm levels

For Small Block Chevrolet applications with Brodix Pontiac design heads

Holley Carburetor Standard Main Jet #109, .150" 31014BK With a maximum pressure ratingThese 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. Installation Notes: NOT FOR USE WITH CARURETORS ORIGINALY DESIGNED FOR ALCOHOL Features: Standard Main Jet . 126" Jet size 1 4 32 Thread Sizes from