Skip to Product Info
    • 122-xx.jpg
    • 122-100_04.jpg
    • Carburetor Standard Main Jet Standard Main Jet, 1/4-32 Thread, .058 Jet Size Holley
    • Carburetor Standard Main Jet Standard Main Jet, 1/4-32 Thread, .058 Jet Size Holley
    Sale!

    Holley Standard Main Jet, .058 in. Jet Size, 1/4-32 Thread | 122-59

    Vendor: Holley
    Part Number: 122-59
    Save $1.91
    Sale Price $15.28 Regular Price $17.19

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

    This Holley standard main jet controls fuel flow into the carburetor's metering system and is flow-tested and stamped with its correct jet number for accurate tuning.

    Specifications:

    • Jet Number: 59
    • Jet Size: 0.058 in.
    • Thread: 1/4-32
    • Material: Brass
    • Product Type: Standard Main Jet
    • Part Number: 122-59

    Fits Holley Model 2010, 2300, 4010, 4011, 4150, 4160, and 4500 carburetors. Sizes available from 40-110. Not for use with carburetors originally designed for alcohol. Jet hole sizes are provided for reference only — all Holley jets are sized by actual flow and may vary from the listed sizes.

    FAQ

    What carburetors does this jet fit?

    Holley Model 2010, 2300, 4010, 4011, 4150, 4160, and 4500 carburetors.

    Can this jet be used in an alcohol carburetor?

    No, it's not for use with carburetors originally designed for alcohol.

    What thread size is it?

    1/4-32.

    What size range is available?

    Sizes from 40 to 110.

    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