SKU: 76178120936

Holley Retrofit Intank Fuel Module - Returnless (HO12-131)

Sale price$417.60 Regular price$464.00
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Description

Holley Retrofit Intank Fuel Module - Returnless (HO12-131)IN TANK RETRO RETURNLES MODULE 255 LPH, 550HP EFI Or 700HP Carb @60 PSI Part Number: HO12 131 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 EFIfuel pump woes. Now you can convert your factory tank or fuel cell to

IN TANK RETRO RETURNLES MODULE

255 LPH, 550HP EFI Or 700HP Carb @60 PSI

Part Number: HO12-131

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 EFIfuel pump woes.

Now you can convert your factory tank or fuel cell to an in-tank EFIfuel system quickly and easily! And- add the benefits of a Holley Hydramat in the process! The conversion is easily accomplished with basictools and requires no welding or fabrication. The billet aluminum module design includes a billet pump hanger bracket to control pump vibration while also providinga 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 systemdesign, 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 7.5" to 12" deep to fit a wide varietyof 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 mountingflange 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
  • Blackanodized aluminium construction for corrosion resistance and long lasting good looks
  • 1/4" NPT ports for a wide variety of plumbing options
  • Idealfor Terminator EFI, Sniper EFI, MSD Atomic EFI or any TBIof EFI conversion
  • Optional roll over valve available
  • Two different fuel pumps are available to match your requirements - 255LPH or 450LPH for both return and returnless style systems
  • Eliminates theneed for a return line and conventional fuel pressure regulator. Thus, simplifying your installation
  • Includes an internal fuel pressure regulator preset at 60 psi fora wide variety of applications. No return line required!
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: 76178120936

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Eden Fam
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★★★★★ 5
LOVE. Ordering more colors.
Size: Medium, Color: Porpoise, Size: Medium, Color: Porpoise
I absolutely LOVE this sweater. This sweater is so flattering and comfortable. Great quality and the material is cozy and soft. I will be ordering this in more colors for sure! I just got it today but I know this will be my go to this season for lounging as well as being out and about. It could easily be dressed up or down and I love the Porpoise color I got (see photos). Originally I thought this came in a set but I still thinks its worth the price for just the sweater and I plan to order the shorts anyway. I got the medium and it fit true to size and so flattering. I am 5ft 2 and about 140lbs being heavier in my legs/hips. I generally wear a small/medium on top depending on the style and a large/XL on bottom. Definitely will be getting more colors!!
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Reviewed in the United States on December 1, 2023
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Diane B
New York, US
★★★★★ 5
beautiful Perfect Sweater! Highly Recommend!
Size: 3X, Color: Zephyr Pink
Gorgeous color. Soft and snuggly. Cool enough in summer for office wear. My office sometimes gets cold even in the summer and this sweater is perfect. I wear it with brown slacks and it looks very professional but could be dressed down for casual affairs. The cut is generous and maybe even runs a little large however, I like the loose fit. I still can't get over the neutral pink color. It is just amazing and was a real steal as it was on sale when I ordered it!
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Reviewed in the United States on June 22, 2025
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Dani Cuervo
West Palm Beach, US
★★★★★ 4
Stylish and comfortable
Size: 3X, Color: Porpoise
I love the slit in the back, it elevates the sweater well. It’s comfortable and made out of a thick, quality material. The only downside is that the sleeves are quite long and don’t roll up well. Otherwise I love it!
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Reviewed in the United States on March 18, 2026
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Ellimac
San Leandro, US
★★★★★ 3
Cute but pills
Size: 3X, Color: Chocolate
Runs a little big. I’m good with that. The style and brown color are great! I love the wide sleeves. The material is very soft and cozy…but I wore it once for 3 hours and the sides and stomach area pilled. I am disappointed. I am going to hand wash it and see what it looks like. I may need to return it.
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Reviewed in the United States on January 27, 2022
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Magan Martin
Whiting, US
★★★★★ 5
Perfect little set! Get both
Size: Small, Color: Porpoise
Such a soft sweater! You have to get the matching set! The quality is amazing and the material is nice and thick for those chilly days! The set feels like a more expensive brand so you get a good deal! I washed it and it did not shrink and the color did not fade. I hung to dry and the fabric still looks perfect!
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Reviewed in the United States on October 7, 2025

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