SKU: 73130234449

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

Sale price$725.40 Regular price$806.00
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Description

Holley Retrofit Intank Fuel Module - Returnless (HO12-131)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 EFI fuel pump woes. Now you can convert your factory tank or

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 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 7.5" 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 aluminium construction for corrosion resistance and long lasting good looks
1/4" 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 450LPH 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!

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: 73130234449

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Timkatmom
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★★★★★ 5
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Color: Navy Blue, Size: Large, Color: Navy Blue, Size: Large
This is the perfect top when you want to have a little dressier look than a t shirt, but you still are dressing casual or you could even dress it up because the material is just so nice. . I bought my usual size which is large. It’s a little bit loose, which I like, but not oversized. It comes down to around mid rear end . It is a half sleeve or almost a half sleeve, so it covers the batwing area. It is a high crew neck, but not uncomfortable. It basically stays wrinkle, free almost all day long and after you wash it, it is ready to wear. Speaking of washing, the garment says to put in a separate bag and wash in the machine. I did not put it in a separate bag because I didn’t read the instructions, but I had no problem afterwards. It does say hang to drive which I always do anyway, and the blouse looks brand new after several washings. The top is very well-made, very department store like looking. I purchased two of them, the navy and the white. The white is a little sheer, but not too bad that you have to wear something underneath it because it is a loose fit, it looks put together. The price was great as I got it on a deal.
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Reviewed in the United States on January 21, 2026
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WonderWoman
Louisville, US
★★★★★ 5
Super cute summer T-shirt!
Color: Black, Size: Small
Surprisingly cute! I thought it looked kinda neat and it turned out pretty great! I got a white one too! The fabric is cool and lightweight. It's different and I like that! It does wrinkle but no biggie. I was looking for a longer sleeve T-shirt and this exceeded my expectations!
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Reviewed in the United States on April 24, 2026
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DIANNA CARTER
Belleville, US
★★★★★ 4
Good tshirt. Too thin
Color: White, Size: Small
Too thin for me. Returning. Great size and shape.
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Reviewed in the United States on March 26, 2026
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J. Taylor
Waukegan, US
★★★★★ 5
Perfection in a top
Color: Black, Size: Large
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Reviewed in the United States on March 30, 2025
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Deni Hill
Louisville, US
★★★★★ 3
It's okay
Color: Dark Green, Size: XX-Large
It may be my build but the shirt just does not look good on me. I like the color. It is comfortable, just does not look good on. Oversized look.
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Reviewed in the United States on August 6, 2025

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