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Holley Performance 0-80813BKX Ultra XP Carburetor

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Ultra XP Carburetor

Ultra XP Carburetor; 4bbl; 750 cfm; 2 Circuit Metering; Model 4150UXP; Mech. Secondary; Gas; Dual Fuel Inlet; Circle Track; Double Accelerator Pump; Shiny w/Blk Metering Blocks;

  • Barrel: Four
  • Billet Color: Shiny with Black Billet
  • Booster Type: Down Leg
  • Carburetor Type: 4150
  • CFM: 750
  • Choke: None
  • Circuit: 2
  • Emission: Without EGR
  • Finish: Shiny
  • Flange: Square Bore
  • Fuel Inlet: Dual
  • Fuel Type: Gasoline
  • Material: Aluminum
  • Primary Main Jet: 78
  • Primary Power Valve: 6.5
  • Secondary Main Jet: 86
  • Secondary Pump Nozzle Size: 32
  • Secondary Type: Mechanical
  • 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 -

  • Aluminum Construction
  • Saves 4.5 Pounds 38% Weight Savings
  • Has A Set Screw In The Base Plate For Wide Open Throttle Stop
  • Throttle Shafts Rides In Oil Smooth Throttle Actuation
  • Metering Blocks/True Gasket Sealing/Fully Adjustable
  • Contoured Venturi Inlet Balances Airflow For Increased hp
  • Air Bleeds Moved Outward Allow Smoother Transition Of Airflow
  • Metering Blocks Feature Durability True Gasket Sealing
  • Idle Bypass Valve Eliminates

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!

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 fits 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.