SKU: 50473119740

Holley Retrofit Intank Fuel Module - Returnless (HO12-133)

Sale price$923.40 Regular price$1026.00
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Description

Holley Retrofit Intank Fuel Module - Returnless (HO12-133)HO12 133 IN TANK RETRO RETURNLES MODULE 450 LPH, 875HP EFI Or 1100HP Carb @ 60 PSI Part Number: HO12 133 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

HO12-133 - IN TANK RETRO RETURNLES MODULE

450 LPH, 875HP EFI Or 1100HP Carb @ 60 PSI

Part Number: HO12-133

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 875 EFI or 1100 Carb HP (@ 60 PSI at 13.5 Volts / 16.9 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: 50473119740

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Amazon Customer
Whiting, US
★★★★★ 5
Great Color
Size: 1 Count (Pack of 1), Style: Cartridge Ink
I was hesitant on purchasing this item. My skepticism was relieved when I installed and printed the first picture...very good quality. However, seems like the ink supply went quickly, either not a complete cartridge or I print too much(which I don't).
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Reviewed in the United States on April 22, 2026
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Carolina
Lowell, US
★★★★★ 5
Good quality
Size: 1 Count (Pack of 1), Style: Cartridge Ink
I would say great value, but I can buy it for the same price in store. I think it’s more of convenience to be able to get it without having to go out.
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Reviewed in the United States on April 28, 2026
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M. O.
Lowell, US
★★★★★ 5
Really nice
Size: 1 Count (Pack of 1), Style: Cartridge Ink
As always great ink quality. Needs to be cheaper, but what can you do?
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Reviewed in the United States on April 13, 2026
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Kellie Register
Lake Worth, US
★★★★★ 5
Ink
Size: 1 Count (Pack of 1), Style: Cartridge Ink
Ink quality was good.
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Reviewed in the United States on June 5, 2026
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Lolapenelope
West Palm Beach, US
★★★★★ 5
Great authenic ink
Size: 1 Count (Pack of 1), Style: Cartridge Ink
I love this - it never disappoints. Authentic epson ink. Gets here really fast have never had a problem.
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Reviewed in the United States on April 25, 2026

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