SKU: 24155891348

500 CFM Ultra XP 2BBL Carburetor - 0-4412BKX

Sale price$359.98 Regular price$399.98
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Ships within 48 hours · Estimated delivery Jul 31 - Aug 5

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Description

500 CFM Ultra XP 2BBL Carburetor - 0-4412BKXOverview: 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

Overview:

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.

Features:

  • All aluminum construction - for nearly 50% weight savings over zinc version
  • Tumble polished aluminum with Black™ billet aluminum metering block and base plate
  • No choke tower for unobstructed airflow
  • Air bleeds moved outward to allow a smoother transition of airflow
  • Air cleaner flange centered over venturii for improved airflow and performance. 5/16-18 bent air cleaner stud included
  • Down-leg boosters for improved fuel signal
  • Contoured hex head squirter screw for streamlined airflow
  • Internal pump passage on metering block equipped with tunable bleed off
  • Same 1-3/8” Venturii & 1-11/16” Throttle Bore size and Throttle Plate/Throttle Shaft size of original 0-4412
  • Fuel bowl provides 20% more fuel capacity while controlling slosh with internal baffling
  • Clear sight windows on both sides of bowl for easy & safe fuel level adjustments
  • Fuel trough designed into floor of bowl to route fuel flow directly to the jets and assists in keeping jets covered by fuel
  • Built in drain plug provides easy access to empty contents of bowl
  • -8 (O-ring) inlet threads offer a large variety of plumbing options (come with an extended -8 O-ring to -8AN male adapter and -8 plug). Can be plumbed from either side
  • Throttle shaft rides in oil impregnated sintered bronze bushings for smooth throttle actuation
  • Throttle shaft capped to prevent entry of debris & contaminates
  • 30cc pump with metal lever. Anti-siphon valve in mainbody to reduce pump pull over
  • Dedicated race-only throttle lever with all unnecessary street attachment points & tangs removed
  • Knurled (hand adjustable) curb idle screw allows for easy idle adjustment without the use of tools
  • Set screw for wide open throttle stop adjustment
  • Wedge float provides fuel control while cornering
  • 100% wet-flow tested by Holley technicians to assure it arrives ready to run!

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Barrels 2
Billet Color Shiny with Black Billet
Booster Down Leg
Brand Holley
Carburetor Use Performance and Race
CFM 500
Choke None
Condition New
Emission Code 3
Finish Shiny
Fuel Gasoline
Fuel Inlet Dual
Marine Use No
Material Aluminum
Model 2300
Primary Main Jet 74
Primary Power Valve 3.5
Primary Pump Nozzle Size 28
Product Type Carburetor
Secondaries None
Supercharged Application No
Throttle Bore 1.688 inch
Venturii Size 1.376 inch
Warning California Proposition 65
Warranty Limited 90 Day
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 24155891348

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Sylvia Moore
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★★★★★ 5
Tasty
Flavor Name: Lemon Pepper, Size: 2 Ounce (Pack of 2)
Delicious healthy snack. Good quality
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Reviewed in the United States on August 18, 2025
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Gulf War Vet
Los Angeles, US
★★★★★ 1
Nothing but gristle!
Flavor Name: Lemon Pepper, Size: 8 Ounce (Pack of 1)
This stuff tastes good, but it is nearly impossible to chew. Biltong is not supposed to be this tough. They must be using the cheapest meat they can get their hands on. It is loaded with gristle. You could chew it all day and never get it to break down.
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Reviewed in the United States on March 1, 2024
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TRANZFR
Fort Morgan, US
★★★★★ 5
Amazing flavor!!!
Flavor Name: Lemon Pepper, Size: 8 Ounce (Pack of 1)
This has to be the most amazing flavor I have had!!! Bought additional packs and sent to the family to enjoy as well. Also note that its very moist and not super dry like a lot of beef jerky. Whatever the process is, Brooklyn Biltong has it dialed in to perfection, well done!
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Reviewed in the United States on October 30, 2023
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Jose Espinoza
Grantham, US
★★★★★ 3
Taste texture
Flavor Name: Lemon Pepper, Size: 8 Ounce (Pack of 1)
I liked the texture but taste is ok too
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Reviewed in the United States on June 23, 2021
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Michael.Sun
Belleville, US
★★★★★ 5
Awesome dried beef!
Flavor Name: Lemon Pepper, Size: 8 Ounce (Pack of 2)
Me and my girlfriend really love the taste of it. Highly recommend.
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Reviewed in the United States on February 19, 2025

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