Holley Performance 12-133 Fuel Pump Module Assembly

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US$399.98
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Free shipping Free 30-day returns

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Management number 254711238 Release Date 2026/11/07 List Price US$399.98 Model Number 254711238
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450 LPH Returnless Drop-In Retrofit EFI Fuel System w/Hydramat<br>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...;<br><br>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.<br><br>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!<br><br>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...;

  • The easiest way to convert your vehicle to an in-tank, EFI fuel system
  • Installs in any fuel tank from 9” 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 enco
  • Black anodized aluminum construction for corrosion resistance and long lasting good looks
  • Â1/4” 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!
Brand Holley
Manufacturer Part Number 12-133
Volts 13.5 V
Fuel Type E85, Gasoline
Vehicle Fitment Type Specific
Has Written Warranty No
Vehicle Type Car
Total Count 1
Assembled Product Weight 3.55 lb
Assembled Product Dimensions (L x W x H) 19.30 x 6.30 x 4.30 in
Assembled Product Width 6.3 in
Assembled Product Length 19.3 in
Condition New

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