Holley 500 CFM Ultra XP 2BBL Carburetor - Black Anodize Shoulder Harness thick or 1 in

thick or 1 in

2001-2001 GMC Sierra 1500

3/4 in Shank Seat

leading to poor handling and premature tire wear

Holley 500 CFM Ultra XP 2BBL Carburetor - Black Anodize Shoulder Harness thick or 1 inThe original Holley 0 4412 has powered thousands of racers to the winners' circle! How do you make it better? Add the proven design elements of the popular Ultra series for more tunability, more durability, more weight savings and more features! The Ultra XP 2bbl carburetors feature all aluminum construction for nearly 50% weight savings over their zinc counterparts, contoured venturi inlet for unobstructed airflow, screw in air bleeds for easy fine