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    Sale!

    Holley Sniper EFI Sealing Plate, 4150 Flange, Includes Gaskets | 520-2

    Part Number: 520-2
    Save $6.24
    Sale Price $49.95 Regular Price $56.19

    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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    This Sniper EFI sealing plate kit eliminates air turbulence between the throttle body and intake manifold on 4150 flange Sniper EFI systems. That turbulence typically shows up as a whistling noise, and this plate/gasket combination closes the gap for quieter operation.

    Specifications:

    • Flange: 4150
    • Includes: (1) Open Plenum Gasket, (1) Four-Barrel Gasket, (1) Sealing Plate
    • Gasket Included: Yes
    • Part Number: 520-2

    Refer to installation instructions 199R11793 for correct placement order.

    FAQ

    What does the 520-2 sealing plate kit solve?

    It eliminates air turbulence between the throttle body and intake manifold on 4150 flange Sniper EFI systems, which typically presents as a whistling noise.

    What's included in the kit?

    An open plenum gasket, a four-barrel gasket, and the sealing plate.

    Is there an installation guide?

    Yes, refer to instruction sheet 199R11793 for the correct gasket and plate placement order.

    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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