SKU: 83281431692

950CFM Ultra XP Carburetor - 0-80845HBX

Sale price$674.98 Regular price$749.98
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Description

950CFM Ultra XP Carburetor - 0-80845HBXOverview: Xtreme Performance Holley Ultra XP carburetors! Ultra XP carbs are up to 38% lighter than our traditional race carbs, have fuel capacity that is 20% greater and 30 other new features! They're available in our all new Hard Core Gray hard coat anodized finish with Black billet for improved corrosion protection. They're also available in natural tumble polished aluminum with your choice of Black or Red metering blocks and base plate. The

Overview:

Xtreme Performance - Holley Ultra XP™ carburetors! Ultra XP carbs are up to 38% lighter than our traditional race carbs, have fuel capacity that is 20% greater and 30 other new features! They're available in our all-new Hard Core Gray™ hard coat anodized finish with Black™ billet for improved corrosion protection. They're also available in natural tumble-polished aluminum with your choice of Black™ or Red™ metering blocks and base plate. The Aluminum Ultra XP comes in 600, 650, 750, 850, and True 950-CFM. Holley Ultra XP carburetors offer new features such as an integrated idle bypass valve that allows for idle adjustments while maintaining the correct throttle plate to transfer slot relationship, high capacity fuel 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, adjustable secondary linkage and knurled (hand adjustable) curb idle screws. Holley Ultra XP carburetors are the ultimate in square bore race carburetors!
 

Features:

  • Aluminum Construction (saves 4.5 lbs - 38% weight savings)
  • Hard Core Gray with black anodized billet aluminum metering block and booster inserts
  • Designed for use on Drag race, circle track, or any high horsepower engines
  • E85 specific calibration
  • Contoured venturri inlet offers balanced airflow for increased horsepower
  • Air bleeds moved outward to allow a smoother transition of airflow from the top of the carburetor into the venturii
  • Metering blocks feature improved durability, true gasket sealing and fully adjustable (emulsion bleeds, power valve channel restrictors & idle feed restrictors)
  • Integrated idle bypass valve eliminates the need for holes in throttle plates and allows for proper adjustment of idle while maintaining correct throttle plate to transfer slot relationship. Helps maintain good idle control when using radical camshafts.
  • Fuel bowls provide 20% more fuel capacity while controlling slosh with internal baffling
  • Clear sight windows on both sides of bowls for easy and safe fuel level adjustments
  • Built in drain plug in front center of bowl provides easy access to empty contents of bowl
  • 8AN (o-ringed) inlet threads offer a large variety of plumbing options and can be plumbed from either side
  • .130" stainless needle & seats to control the demand of E-85
  • 4 corner idle allows you to precisely control your idle system
  • Mechanical Secondaries for perfect off the line launches
  • Elongated (dual pattern) mounting holes allow fitment on intakes with square flange (Holley 4150™ style) or large flange (Holley Dominator® style)
  • Knurled (hand adjustable) primary and secondary curb idle screws allow for easy idle adjustment without the use of tools
  • Primary throttle shaft capped to prevent entry of debris & contaminates
  • Throttle shaft is slabbed and undercut for improved airflow
  • Factory machined accessory mounting hole for easy addition of adjustable primary throttle stop. New secondary pump cam lever designed to provide positive throttle stop on secondary side
  • Stainless steel adjustable secondary link. Provides choice of 1:1 or progressivesecondary throttle actuation for ultimate control of secondary opening rate
  • Baseplate designed with a boss that can be consumer machined for vacuum source
  • Stainless steel throttle plates
  • Includes notched float and jet extensions
  • 100% wet-flow tested by Holley technicians to assure it arrives ready to run!

 

Application:

Year Make Model Submodel Engine Size
Universal

 

Specs:

Barrels 4
Billet Color Hard Core Gray with Black
Booster Down Leg
Brand Holley
Carburetor Use Professional Race
CFM 950
Choke None
Condition New
Emission Code 3
Finish Hard Core Gray
Fuel E-85
Fuel Inlet Dual
High Speed Air Bleed 24
Idle Air Bleed Size 67
Marine Use No
Material Aluminum
Model 4150
Primary Main Jet 96
Primary Power Valve 5.5
Primary Pump Nozzle Size 42
Product Type Ultra XP Carburetor
Secondaries Mechanical
Secondary Main Jet 106
Secondary Pump Nozzle Size 50
Supercharged Application No
Throttle Bore 1.750 inch
Venturii Size 1.600 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: 83281431692

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Charmed
Omaha, US
★★★★★ 5
Worth the buy!
Color: Upgrade Silver, Size: Rechargeable
Great product!
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Reviewed in the United States on May 13, 2026
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Believer247
Los Angeles, US
★★★★★ 3
Mediocre salt and pepper grinders
Color: Upgrade Silver, Size: Rechargeable
Pros: They do work, and they are rechargeable. Cons: the motors run really slow, capacity is low, The charging tray you have to empty frequentlyto reduce buildup underneath the salt and pepper grinders.
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Reviewed in the United States on March 3, 2026
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Bibi
Louisville, US
★★★★★ 5
Sleek and classy
Color: Upgrade Silver, Size: Rechargeable
I love that these are rechargeable
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Reviewed in the United States on April 25, 2026
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Walnut Creek Lady
Alexandria, US
★★★★★ 5
Excellent Pepper Grinder
Color: Upgrade Black, Size: Rechargeable
I've had several pepper grinders over the years, and none was as easy and smooth to use as this one. It fills easily, and it grinds evenly and smoothly with a gentle press of the button. I am glad there are two, just in case one does give out, I will have the other to use, as I am not interested in grinding salt. It runs so effortlessly that you have to be a little careful when picking it up that you do not accidentally engage the button before you want the pepper to come out. I love it, and came back here after using it for two months just to let you know.
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Reviewed in the United States on April 26, 2026
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GY
Natrona Heights, US
★★★★★ 5
Greatest Kitchen Item I've Bought in Years
Color: Upgrade Black, Size: Rechargeable
These grinders are awesome. No more tedious grinding, or endless shaking! I love the adjustable grind levels (I like mine fairly coarse), and these hold a charge for a long time - months. My friends are super impressed when they visit, and will probably be buying these too.
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Reviewed in the United States on May 23, 2026

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