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    • AED5085.jpg

    AED 8.5 Power Valve, High Flow | 5085

    Vendor: Advanced Engine Design
    Part Number: 5085
    $10.68

    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
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    Product DetailsFAQReviewsRelated Products

    AED's 8.5 Power Valve is a high-flow design that opens at 8.5 in. Hg of vacuum, adding a richer fuel mixture to the carburetor under load for improved power delivery on Holley carburetors.

    Specifications:

    • Opens at 8.5 in. Hg of vacuum
    • High-flow design for a richer fuel mixture under load
    • Fits Holley carburetors
    • Part Number: 5085

    FAQ

    At what vacuum does this power valve open?

    It opens at 8.5 in. Hg of vacuum.

    What does a power valve do?

    A power valve adds extra fuel to the carburetor's circuit when engine vacuum drops under load, richening the mixture for more power.

    How do I choose the correct power valve rating?

    Select a power valve rated below the engine's lowest in-gear idle vacuum reading; choosing one rated too high can cause the valve to open at idle.

    What carburetors is this power valve compatible with?

    It's designed for Holley carburetors.

    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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