The 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-tuning. Black anodized fully adjustable billet aluminum metering block and baseplate. High capacity fuel bowl which features 20% more fuel capacity to eliminate starvation. Integrated fuel shelf to minimize fuel aeration and internal baffling to control fuel slosh. A centered air cleaner flange for improved airflow and performance. Other notable features include wedged floats, knurled hand-adjustable curb idle screw and down leg boosters. Ultra XP 2bbl carburetors are approved for use in NASCAR® Mid-West/West Coast Late Model Divisions and utilize the same venturi and throttle bore dimensions of the classic 4412 2bbl carburetors. Available in shiny or Hard Core Gray finishes, the Ultra XP 2bbl will outperform any production 2bbl available.
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