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    • Double Adjustable Fuel Regulator 2 Port Double Adjustable Regulator 10AN Adjustable from 4-9 PSI Holley
    • Double Adjustable Fuel Regulator 2 Port Double Adjustable Regulator 10AN Adjustable from 4-9 PSI Holley
    • Double Adjustable Fuel Regulator 2 Port Double Adjustable Regulator 10AN Adjustable from 4-9 PSI Holley
    • Double Adjustable Fuel Regulator 2 Port Double Adjustable Regulator 10AN Adjustable from 4-9 PSI Holley
    • Double Adjustable Fuel Regulator 2 Port Double Adjustable Regulator 10AN Adjustable from 4-9 PSI Holley

    Holley 2-Port Double Adjustable Fuel Pressure Regulator, 10AN, 4-9 PSI | 12-883

    Vendor: Holley
    Part Number: 12-883
    Save $258
    Sale Price $209.95 Regular Price $467.95

    Currently out of 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
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    This Holley double adjustable fuel pressure regulator is designed for belt or cable driven pumps where fuel flow changes with engine RPM. Machined from billet aluminum, it uses a strategically placed idle adjustment design so no ports are blocked, retaining true 2-port flow, and is compatible with alcohol and E85 applications.

    Specifications:

    • Application: Universal
    • Color: Black Anodized
    • Fuel System: Carbureted
    • Fuel Type: Gasoline, Diesel
    • Inlet Size: 10 AN ORB
    • Outlet Size: 10 AN ORB
    • Material: Aluminum
    • Pressure Range: 4-9 PSI
    • Style: Double Adjustable
    • Product Type: Fuel Pressure Regulator
    • Part Number: 12-883

    Compatible with Diesel #1 and Diesel #2. Features individual adjustment settings for idle and wide-open throttle, allowing fuel pressure adjustment at idle to help prevent flooding at low RPMs, while WOT settings help prevent fuel starvation at the top of the RPM range.

    FAQ

    What is this regulator designed for?

    It's designed for belt or cable driven fuel pumps where fuel flow changes with engine RPM, and is compatible with alcohol and E85 applications.

    Can idle and wide-open throttle pressure be set separately?

    Yes, it features individual adjustment settings for idle and wide-open throttle to help prevent flooding at low RPM and fuel starvation at high RPM.

    What fuels is it compatible with?

    It's compatible with gasoline, diesel (#1 and #2), and alcohol/E85 applications.

    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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