Ultra XP Carburetor - Holley - 0-4412HBX

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 venturii 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 and 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 venturii and throttle bore dimensions of the classic 4412 2bbl carburetor. Available in shiny or Hard Core Gray finishes, the Ultra XP 2bbl will outperform any production 2bbl available.

Resources

Installation Instructions

Specifications:

Barrel	Two
Billet Color	Hard Core Gray with Black
Booster Type	Down Leg
Carburetor Type	2300
CFM	500
Choke	None
Description_ASC	Holley Performance Emission Code 3: This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles. The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles: 1965 and older U.S. manufactured California Certified vehicles/1967 and older U.S. manufactured Federally Certified vehicles/1967 and older Foreign manufactured vehicle. The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle. The following vehicles are considered Emissions Controlled Vehicles: 1966 and newer U.S. manufactured California Certified vehicles/1968 and newer U.S. manufactured Federally Certified vehicles/1968 and newer Foreign manufactured vehicle
Description_ASM	Hard Core Gray
Description_CAP	Ultra XP
Description_DEF	Carburetor
Description_DES	Ultra XP Carburetor
Description_EXT	Ultra XP Carburetor; 2 bbl; 500 cfm; Mech. Secondary; Gas; Dual Fuel Inlet; Model 2300 XP; E-85; Hard Core Gray w/Blk Metering Block/Base Plate;
Description_FAB	Air Bleeds Moved Outward Allow Smoother Transition Of Airflow
Description_FAB	All Aluminum Construction
Description_FAB	Built In Drain Plug Provides Easy Access to Empty Bowl
Description_FAB	Clear Sight Window On Both Sides Of Bowl For Fuel Level Adjust
Description_FAB	Contoured Hex Head Squirter Screw For Streamlined Airflow
Description_FAB	Down-Leg Boosters For Improved Fuel Signal
Description_FAB	Fuel Bowl Provides 20% More Fuel Capacity Controls Slosh
Description_FAB	Internal Pump Passage On Metering Block w/Tunable Bleed Off
Description_FAB	No Choke Tower For Unobstructed Airflow
Description_INV	2300 ALUM ULTRA XP 500 CFM (HARD BLACK)
Description_LAB	Proposition 65
Description_MKT	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 venturii 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 and 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 venturii and throttle bore dimensions of the classic 4412 2bbl carburetor. Available in shiny or Hard Core Gray finishes, the Ultra XP 2bbl will outperform any production 2bbl available.
Description_SHO	Carburetor
Emission	Without EGR
Finish	Hard Core Gray
Flange	2bbl/2300
Fuel Inlet	Single
Fuel Type	Gasoline
Level1	Level 1: Air and Fuel Delivery
Level2	Level 2: Carburetion
Material	Aluminum
Primary Main Jet	74
Primary Power Valve	3.5
Secondary Type	None
Supercharged Application	No
Throttle Bore	1.688 in.
Type	Automotive
Usage	Racing
Venturii Size	1.376 in.
WARNING CA Proposition 65	Yes
WARNING CA Proposition 65 Message	WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov