SKU: 15802692717

Holley In-Tank RetroFit Fuel Module-Returnless Style - 12-131

Sale price$382.48 Regular price$424.98
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Description

Holley In-Tank RetroFit Fuel Module-Returnless Style - 12-131Overview: Are you interested in an EFI retrofit kit, but just can't get past the complication of the fuel system? Holley is proud to introduce their Universal In Tank Retrofit Fuel Modules! Available in return and returnless versions, you can rest assured Holley has the solution you need for your EFI fuel pump woes. Now you can convert your factory tank or fuel cell to an in tank EFI fuel system quickly and easily! And add the benefits of a Holley

Overview:

Are you interested in an EFI retrofit kit, but just can't get past the complication of the fuel system? Holley is proud to introduce their Universal In-Tank Retrofit Fuel Modules! Available in return and returnless versions, you can rest assured Holley has the solution you need for your EFI fuel pump woes. Now you can convert your factory tank or fuel cell to an in-tank EFI fuel system quickly and easily! And- add the benefits of a Holley Hydramat in the process! The conversion is easily accomplished with basic tools and requires no welding or fabrication. The billet aluminum module design includes a billet pump hanger bracket to control pump vibration while also providing a low profile design to fit where space is at a premium. Holley's innovative clamping system and integrated fuel pump makes it easy. Once installed, hook up your fuel lines and your power source/ground and you're off and running! NO hassle! Supports up to 550 EFI or 700 Carb HP (HP Rating @ 60 PSI at 13.5 Volts / 10.4 AMP Draw) Of course there are many variables, estimates are based on gasoline. Individual systems will vary based on fuel system design, regulator type, fuel cell location, etc...

Features:

  • The easiest way to convert your vehicle to an in-tank, EFI fuel system
  • Installs in any fuel tank from 8.5” to 12” deep to fit a wide variety of applications
  • The low profile design is only 1.275" thick above the tank mounting surface for added clearance when needed
  • The innovative clamping system allows you to locate the module anywhere in the tank beside your existing sending unit
  • The clamping system allows you to rotate the unit 360 degrees for easier clocking of the plumbing and wiring locations under your ride
  • Includes innovative Holley Hydramat to ensure consistent fuel supply. The 3” x 15” HydraMat mounting flange has 6 clocking pin locations to allow for 360 degree adjustment to clear sending unit levels or any tank floor restrictions that you might encoun
  • Black anodized aluminum construction for corrosion resistance and long lasting good looks
  • ¼” NPT ports for a wide variety of plumbing options
  • Ideal for Terminator EFI, Sniper EFI, MSD Atomic EFI or any TBI of EFI conversion
  • Optional roll over valve available
  • Two different fuel pumps are available to match your requirements - 255LPH or 400LPH for both return and returnless style systems
  • Eliminates the need for a return line and conventional fuel pressure regulator. Thus, simplifying your installation
  • Includes an internal fuel pressure regulator preset at 60 psi for a wide variety of applications. No return line required!

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Application Universal
Brand Holley
Diameter 4.8"
Emission Code 3
Free Flow LPH 255
Material Billet Aluminum
NPT Thread 1/4 NPT
Product Type Fuel Pump Module
Warranty Limited 90 Day
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 15802692717

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D S
Draper, US
★★★★★ 4
good quality, value; watch the sizing
Color: Black, Size: Large
quality is good, especially for the the price. the built-in pocket square i like very much; it gives an automatic ''flare'' to the look and with no effort on your part. only thing iffy was the sizing. this item, like many entry-level blazers, are size-marked like a casual shirt in small, medium, large; not the typical 34, 36, etc. i wear large casual but smaller suit and because of the manufacturer's labeling went with large. result was that the jacket was too big. i didn't exchange it but probably could do size small (or actually try multiple sizes). i would buy again if i could find my proper size
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Reviewed in the United States on July 22, 2025
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Stingray
Whiting, US
★★★★★ 5
Nice material nice fit
Nice material nice fit
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Reviewed in the United States on February 12, 2026
M
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Michael Pignataro
Grantham, US
★★★★★ 5
Get it
Can't beat it for the price perfect to give casual wear a touch of class a lot better quality than I thought it would be very happy with the purchase
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Reviewed in the United States on September 18, 2025
A
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Alicia C. Robinson
Belleville, US
★★★★★ 5
Recommended
Size: Medium, Color: Black
Great fit and great quality. I do recommend this product.
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Reviewed in the United States on April 10, 2026
A
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Acrowbat
Fort Morgan, US
★★★★★ 5
Suprisingly good quality and a great looking jacket
I have been searching for a ring master jacket for a circus themed gala where I will be the Auctioneer/Ring Master. All the other jackets I looked at were either cheap costume stuff or just looked a little too much military Hussar style with all of the added gold tassels. This has just the right class and definitely the right look. I was worried it would fit weird or just not be constructed well but I could not be any happier with this jacket- the sleeves are a perfect length when my arms hang at my side, as is the high waist cut and the length of the tails are also just right- and best of all the sequins really shine. I spent my career in the circus and the performing arts and this would have been more than acceptable on stage for someone to wear as a ring master or to look fancy and sparkly, assuming nobody will be standing on your shoulders and popping off your sequins. It is comfortable to wear, although I would not say it allows for full range of motion relative to a costume I would have actually worn in a circus while doing acrobatics. But that would be a totally hand made costume with flexible material and 4-10x the price. Overall it cannot be beat for your average wearer!
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Reviewed in the United States on January 9, 2023

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