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Holley Ultra XP Carburetor 0-4412EX

Holley Ultra XP Carburetor 0-4412EX
Holley Ultra XP Carburetor 0-4412EXHolley Ultra XP Carburetor 0-4412EXHolley Ultra XP Carburetor 0-4412EXHolley Ultra XP Carburetor 0-4412EXHolley Ultra XP Carburetor 0-4412EXHolley Ultra XP Carburetor 0-4412EXHolley Ultra XP Carburetor 0-4412EXHolley Ultra XP Carburetor 0-4412EXHolley Ultra XP Carburetor 0-4412EX
$1,311.99 ea
NEWARRIVING SOONEstimated Ship Date 10/23/2023 (If Ordered Today)27 available from HOLLEY PERFORMANCE PRODUCTS as of 09/29/2023
Model: 3990386
Supplier has not provided any fitment data for this product.
Xtreme Performance - Holley Ultra XP(TM) Circle Track Carburetors! Ultra XP carbs are 38% lighter than our original HP, have fuel capacity that is 20% greater and 30 other new features! They're available in our Hard Core Gray(TM) hard coat anodized finish with Black(TM) billet for improved corrosion protection & also available in natural tumble-polished aluminum with Black(TM) metering blocks and base plate. The Aluminum Ultra XP Cirlce Tracks are available in 650 & 750 CFM's. Holley Ultra XP carburetors are Specifically Calibrated for Circle Track & offer new features such as anti-siphon valve in the main body; high capacity HP bowls which feature 20% more fuel capacity to eliminate starvation, integrated fuel shelf to minimize fuel aeration and internal baffling to control fuel slosh. Other features include all aluminum construction, fully tunable billet metering blocks, billet base plate, wedge floats, adjustable secondary linkage and knurled (hand adjustable) curb idle screws. Holley Ultra XP carburetors are the ultimate in square bore race carburetors!
  • E85 Fuel Compatible
  • All Aluminum Construction
  • Black Billet Aluminum Metering Block and Base Plate
  • No Choke Tower For Unobstructed Airflow
  • Air Bleeds Moved Outward Allow Smoother Transition Of Airflow
  • Down-Leg Boosters For Improved Fuel Signal
  • Contoured Hex Head Squirter Screw For Streamlined Airflow
  • Internal Pump Passage On Metering Block w/Tunable Bleed Off
  • Built In Drain Plug Provides Easy Access to Empty Bowl
  • Fuel Bowl Provides 20% More Fuel Capacity Controls Slosh
  • Clear Sight Window On Both Sides Of Bowl For Fuel Level Adjust
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

About Holley Performance Products

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every Monster Energy NASCAR Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds and engine dress-up products for street performance, race and marine applications. As a single solution or partnered with products from other Holley companies we can give you the edge you need over the competition!


Download Name File Size



Barrel Two
Barrels 2
Billet Color Hard Core Gray with Black
Booster Down Leg
Booster Type Down Leg
Carburetor Type 2300
Carburetor Use Performance and Race
CFM 500
Choke None
Condition NEW
Emission Without EGR
Emission Code 3
Finish Hard Core Gray
Flange 2bbl/2300
Fuel E-85
Fuel Inlet Single
Fuel Type E-85
Marine Use No
Material Aluminum
Model 2300
Part Type Carburetor
Primary Main Jet 88
Primary Power Valve 3.5
Primary Pump Nozzle Size 35
Secondaries None
Secondary Type None
Supercharged Application No
Throttle Bore 1.688 in.
Type Automotive
Usage Racing
Venturii Size 1.376 in.
WARNING CA Proposition 65 WARNING: Cancer and Reproductive Harm


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Holley Ultra XP Carburetor 0-4412EX:
Classic Nova 2023