• 12-131.jpg
  • 12-135_05.jpg
  • 12-135_06.jpg
  • 12-135_09.jpg
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  • img_1539.jpg
  • In-Tank Retrofit Fuel Module- Returnless Style 450 LPH Returnless Drop-In Retrofit EFI Fuel System W/hydramat Supports Up to 875 EFI or 1100 CARB HP (At 60 PSI at 13.5 Volts / 16.9 AMP Draw) Holley
  • In-Tank Retrofit Fuel Module- Returnless Style 450 LPH Returnless Drop-In Retrofit EFI Fuel System W/hydramat Supports Up to 875 EFI or 1100 CARB HP (At 60 PSI at 13.5 Volts / 16.9 AMP Draw) Holley
  • In-Tank Retrofit Fuel Module- Returnless Style 450 LPH Returnless Drop-In Retrofit EFI Fuel System W/hydramat Supports Up to 875 EFI or 1100 CARB HP (At 60 PSI at 13.5 Volts / 16.9 AMP Draw) Holley
  • In-Tank Retrofit Fuel Module- Returnless Style 450 LPH Returnless Drop-In Retrofit EFI Fuel System W/hydramat Supports Up to 875 EFI or 1100 CARB HP (At 60 PSI at 13.5 Volts / 16.9 AMP Draw) Holley
  • In-Tank Retrofit Fuel Module- Returnless Style 450 LPH Returnless Drop-In Retrofit EFI Fuel System W/hydramat Supports Up to 875 EFI or 1100 CARB HP (At 60 PSI at 13.5 Volts / 16.9 AMP Draw) Holley
  • In-Tank Retrofit Fuel Module- Returnless Style 450 LPH Returnless Drop-In Retrofit EFI Fuel System W/hydramat Supports Up to 875 EFI or 1100 CARB HP (At 60 PSI at 13.5 Volts / 16.9 AMP Draw) Holley
    • 12-131.jpg
    • 12-135_05.jpg
    • 12-135_06.jpg
    • 12-135_09.jpg
    • 12-135_11.jpg
    • img_1539.jpg
    • In-Tank Retrofit Fuel Module- Returnless Style 450 LPH Returnless Drop-In Retrofit EFI Fuel System W/hydramat Supports Up to 875 EFI or 1100 CARB HP (At 60 PSI at 13.5 Volts / 16.9 AMP Draw) Holley
    • In-Tank Retrofit Fuel Module- Returnless Style 450 LPH Returnless Drop-In Retrofit EFI Fuel System W/hydramat Supports Up to 875 EFI or 1100 CARB HP (At 60 PSI at 13.5 Volts / 16.9 AMP Draw) Holley
    • In-Tank Retrofit Fuel Module- Returnless Style 450 LPH Returnless Drop-In Retrofit EFI Fuel System W/hydramat Supports Up to 875 EFI or 1100 CARB HP (At 60 PSI at 13.5 Volts / 16.9 AMP Draw) Holley
    • In-Tank Retrofit Fuel Module- Returnless Style 450 LPH Returnless Drop-In Retrofit EFI Fuel System W/hydramat Supports Up to 875 EFI or 1100 CARB HP (At 60 PSI at 13.5 Volts / 16.9 AMP Draw) Holley
    • In-Tank Retrofit Fuel Module- Returnless Style 450 LPH Returnless Drop-In Retrofit EFI Fuel System W/hydramat Supports Up to 875 EFI or 1100 CARB HP (At 60 PSI at 13.5 Volts / 16.9 AMP Draw) Holley
    • In-Tank Retrofit Fuel Module- Returnless Style 450 LPH Returnless Drop-In Retrofit EFI Fuel System W/hydramat Supports Up to 875 EFI or 1100 CARB HP (At 60 PSI at 13.5 Volts / 16.9 AMP Draw) Holley
    Sale!

    Holley In-Tank RetroFit Fuel Module, Returnless Style, 450 LPH | 12-133

    Vendor: Holley
    Part Number: 12-133
    Save $125
    $999.95 $1,124.95

    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.
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    Product DetailsFAQReviewsRelated Products

    This Holley universal in-tank retrofit fuel module converts a factory tank or fuel cell to a returnless EFI fuel system without welding or fabrication, adding a Holley Hydramat for consistent fuel supply in a low-profile, 360-degree adjustable clamping design.

    Specifications:

    • Application: Universal
    • Free Flow Rating: 450 LPH (16.9 Amp Draw)
    • Fuel Type: Gasoline, E85
    • Material: Billet Aluminum
    • Fitting Size: 1/4" NPT
    • Minimum Tank Depth: 8"
    • Internal Regulator: Preset at 60 PSI, no return line required
    • Supports: Up to 875 EFI HP or 1100 Carb HP
    • Part Number: 12-133

    Installs in any fuel tank from 8" to 12" deep. Holley recommends a 12-753 30-amp fuel pump relay with a minimum 12-gauge wire for installation, and a maximum 6AN line/fitting size due to space limitations between the unit and the fuel tank.

    FAQ

    What horsepower can the 12-133 module support?

    Up to 875 HP on EFI or 1100 HP on a carbureted combination (@ 60 PSI, 13.5V, 16.9 amp draw), based on gasoline estimates.

    Does this module require a separate fuel pressure regulator?

    No, it includes an internal regulator preset at 60 PSI, eliminating the need for a return line and conventional regulator.

    What tank depths does this module fit?

    Any tank from 8" to 12" deep.

    What wiring is recommended for installation?

    A Holley 12-753 30-amp fuel pump relay along with a minimum 12-gauge wire.

    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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