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Holley Performance 0-4412HBX Ultra XP Carburetor

5728902 - 0-4412HBX

2 bbl - 500 cfm - Mech. Secondary - Gas - Dual Fuel Inlet - Model 2300XP - E-85 - Hard Core Gray w/Blk Metering Block/Base Plate

0-4412HBX Ultra XP Carburetor Holley Performance

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Pricing: $579.95


Holley Performance - Ultra XP Carburetor - Part#: 0-4412HBX Features:

  • All Aluminum Construction
  • 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 Percent More Fuel Capacity Controls Slosh
  • Clear Sight Window On Both S

View the Full List of Automotive Applications »

Below is an abbreviated list of applications for the Ultra XP Carburetor.


Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro–Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Exhaust, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.


  • 5728902 - 0-4412HBX
  • 5728902
  • 0-4412HBX
  • 090127713365
  • Holley Performance
  • New

Shipping Information

  • Item Requires Shipping
  • 5.8 lbs.
  • W11.0000” x H7.5000” x L12.2500”

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