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    Holley Fuel Pump Module, 525 LPH In-Tank | 12-347

    Vendor: Holley EFI
    Part Number: 12-347
    Save $58
    Sale Price $458.95 Regular Price $516.95

    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
    International Shipping Available: email sales@berryperformancesales.com for a quote.
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    This direct-fit fuel pump module drops into any 1983-1997 Ford Mustang EFI fuel tank, built around a 525 LPH Holley fuel pump rated to support up to 1200 EFI or 1450 carbureted horsepower (60 PSI at 13.5V / 17A draw). The flange uses a 6AN o-ring outlet and return port for easy plumbing, and the kit includes the hanger assembly, fuel pump inlet filter, flange o-ring, and tank lock ring/gasket needed for a complete stock-tank installation.

    Specifications:

    • Application: 1983-1997 Ford Mustang
    • Fuel Type: Gasoline/E85 Compatible
    • Material: 6061-T6 Aluminum, bright dip black anodized flange
    • Maximum Flow Rating: 525 LPH
    • Inlet/Outlet: One each, -6AN o-ring
    • Sub Category: Fuel Pumps and Related Components
    • Warranty: Manufacturer's Limited 90 Day Warranty
    • Part Number: 12-347

    Requires a bypass-style fuel pressure regulator, such as Holley 12-886 (EFI) or 12-887 (carbureted).

    FAQ

    What horsepower will this fuel pump module support?

    Up to 1200 EFI horsepower or 1450 carbureted horsepower at 60 PSI and 13.5 volts.

    What years and vehicles does 12-347 fit?

    1983-1997 Ford Mustang EFI fuel tanks, direct fit.

    Do I need a separate fuel pressure regulator?

    Yes, a bypass-style regulator such as Holley 12-886 (EFI) or 12-887 (carbureted) is required.

    What is included in the kit?

    The hanger assembly, fuel pump inlet filter, flange o-ring, and tank lock ring/gasket for a complete stock-tank install.

    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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