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    • Ultra XP Carburetor 950 CFM 4150 Mechanical Secondaries Shiny Gasoline Holley
    • Ultra XP Carburetor 950 CFM 4150 Mechanical Secondaries Shiny Gasoline Holley
    • Ultra XP Carburetor 950 CFM 4150 Mechanical Secondaries Shiny Gasoline Holley
    • Ultra XP Carburetor 950 CFM 4150 Mechanical Secondaries Shiny Gasoline Holley
    • Ultra XP Carburetor 950 CFM 4150 Mechanical Secondaries Shiny Gasoline Holley
    • Ultra XP Carburetor 950 CFM 4150 Mechanical Secondaries Shiny Gasoline Holley
    • Ultra XP Carburetor 950 CFM 4150 Mechanical Secondaries Shiny Gasoline Holley
    • Ultra XP Carburetor 950 CFM 4150 Mechanical Secondaries Shiny Gasoline Holley
    Sale!

    Holley Ultra XP Carburetor, 950 CFM, 4150 Mechanical Secondaries, Shiny | 0-80805BKX

    Vendor: Holley
    Part Number: 0-80805BKX
    Save $305
    Sale Price $1,213.95 Regular Price $1,518.95

    In Stock

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    International Shipping Available: email sales@berryperformancesales.com for a quote.
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    Holley's Ultra XP carburetor is up to 38% lighter than traditional race carbs, with 20% more fuel capacity, offered in natural tumble-polished aluminum with a shiny finish and black anodized billet metering blocks and base plate.

    Specifications:

    • Brand: Holley
    • CFM: 950
    • Model: 4150
    • Barrels: 4
    • Secondaries: Mechanical
    • Booster Design: Downleg
    • Flange: Square/4150 (dual-pattern, also fits Dominator-style flange)
    • Fuel: Gasoline
    • Body Finish: Polished, Shiny with Black Billet
    • Carburetor Material: Aluminum
    • Fuel Inlet: Dual, 8AN O-ringed
    • Throttle Bore: 1.750 in.
    • Venturii Size: 1.600 in.
    • Primary/Secondary Main Jet: 92
    • Primary Power Valve: 4.5
    • Primary/Secondary Pump Nozzle Size: 32
    • Carburetor Use: Professional Race
    • Condition: New
    • UPC: 90127713495
    • Warranty: Manufacturer's Limited 90 Day Warranty
    • Part Number: 0-80805BKX

    Dual-pattern mounting holes allow installation on manifolds machined for either 4150-style square flange or Dominator-style large flange. Includes notched float and jet extensions, a fully adjustable stainless steel secondary linkage, and mechanical secondaries for consistent off-the-line launches.

    FAQ

    What is the CFM rating?

    950 CFM.

    How does this differ from part number 0-80805HBX?

    Both are 950 CFM Ultra XP carburetors with mechanical secondaries; this version (0-80805BKX) has a shiny polished finish instead of Hard Core Gray.

    Will it fit a Dominator-style intake?

    Yes, the dual-pattern mounting holes fit both 4150-style square flange and Dominator-style large flange intakes.

    What size fuel inlet fittings does it use?

    8AN O-ringed inlet threads, plumbable from either side.

    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy

    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy

    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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