Skip to Product Info
    • at104195erl.jpg
    • 34-42_02.jpg
    • 34-42_03.jpg
    • 34-42_04.jpg
    • 34-42_05.jpg
    • 34-42_06.jpg
    • 34-42_08.jpg
    • 34-42_09.jpg
    • Fuel Line Dual Fuel Lines for 4150 Ultra XP Carburetors w -8 O-Ring XP Bowls Fuel Line with Single 6AN Inlet, Fittings with Pro-Lite 350 Hose Holley
    • Fuel Line Dual Fuel Lines for 4150 Ultra XP Carburetors w -8 O-Ring XP Bowls Fuel Line with Single 6AN Inlet, Fittings with Pro-Lite 350 Hose Holley
    • Fuel Line Dual Fuel Lines for 4150 Ultra XP Carburetors w -8 O-Ring XP Bowls Fuel Line with Single 6AN Inlet, Fittings with Pro-Lite 350 Hose Holley
    • Fuel Line Dual Fuel Lines for 4150 Ultra XP Carburetors w -8 O-Ring XP Bowls Fuel Line with Single 6AN Inlet, Fittings with Pro-Lite 350 Hose Holley
    • Fuel Line Dual Fuel Lines for 4150 Ultra XP Carburetors w -8 O-Ring XP Bowls Fuel Line with Single 6AN Inlet, Fittings with Pro-Lite 350 Hose Holley
    • Fuel Line Dual Fuel Lines for 4150 Ultra XP Carburetors w -8 O-Ring XP Bowls Fuel Line with Single 6AN Inlet, Fittings with Pro-Lite 350 Hose Holley
    • Fuel Line Dual Fuel Lines for 4150 Ultra XP Carburetors w -8 O-Ring XP Bowls Fuel Line with Single 6AN Inlet, Fittings with Pro-Lite 350 Hose Holley
    • Fuel Line Dual Fuel Lines for 4150 Ultra XP Carburetors w -8 O-Ring XP Bowls Fuel Line with Single 6AN Inlet, Fittings with Pro-Lite 350 Hose Holley
    • Fuel Line Dual Fuel Lines for 4150 Ultra XP Carburetors w -8 O-Ring XP Bowls Fuel Line with Single 6AN Inlet, Fittings with Pro-Lite 350 Hose Holley
    • Fuel Line Dual Fuel Lines for 4150 Ultra XP Carburetors w -8 O-Ring XP Bowls Fuel Line with Single 6AN Inlet, Fittings with Pro-Lite 350 Hose Holley
    Sale!

    Holley Fuel Line, 4150 Ultra XP Carburetor, 6AN Inlet, 9.75" | 34-42

    Vendor: Holley
    Part Number: 34-42
    Save $24
    Sale Price $191.95 Regular Price $215.95

    Available to order. In-stock orders typically ship in 1 to 2 business days.

    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.
    Payment & Security

    Secure, encrypted checkout. Card details go straight to the payment processor and are never stored by us.

    • Amazon
    • Amazon
    • American Express
    • Apple Pay
    • Diners Club
    • Discover
    • Google Pay
    • Mastercard
    • PayPal
    • Shop Pay
    • Venmo
    • Visa
    Share to:

    This dual fuel line is built for Holley 4150 Ultra XP carburetors with -8 O-ring XP bowls, featuring a single 6AN inlet and Pro-Lite 350 hose.

    Specifications:

    • Center to Center Measurement: 9.75"
    • Inlet Fitting Thread Diameter: 6 AN
    • Outlet Fitting Thread Diameter: 8 AN
    • Material: Aluminum
    • Model: 4150 Ultra XP
    • Finish: Black
    • Product Type: Fuel Line
    • Warranty: Manufacturer's Limited 90 Day Warranty
    • Part Number: 34-42

    Runs 9.75" long versus the standard 9.50" line, accommodating the XP bowls' increased fuel capacity (+.125" per bowl, +.250" overall).

    FAQ

    What carburetors is this fuel line designed for?

    Holley 4150 Ultra XP carburetors with -8 O-ring XP bowls.

    What size is the inlet fitting?

    A single 6AN inlet.

    Why is the line longer than standard?

    The XP bowls' increased fuel capacity extends the required line length to 9.75" versus the standard 9.50".

    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.

    Recently Viewed