Holley In-Tank RetroFit Fuel Module- Returnless Style 12-133
Holley In-Tank RetroFit Fuel Module- Returnless Style 12-133
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Material:
450 LPH Returnless Drop-In Retrofit EFI Fuel System w/Hydramat Supports up to 875 EFI or 1100 Carb HP (@ 60 PSI at 13.5 Volts / 16.9 AMP Draw)
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.
NOTES: It is recommended to use a Holley 12-753 30 Amp Fuel Pump Relay along with a minimum size of 12 Gauge wire for your installation. *** Maximum 6AN line and fitting size due to space limitations between unit and fuel tank.
Features:
- The easiest way to convert your vehicle to an in-tank, EFI fuel system
- Installs in any fuel tank from 8? to 12? deep to fit a wide variety of applications
- The low profile 5 inch diameter design is only 1.275 inches 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
- Black anodized aluminum construction for corrosion resistance and long lasting good looks
- ?? 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!
Specs:
Application | Universal |
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Average Current Draw | 16.9Ampere |
Average Flow Rating | 450Liters per Hour |
Brand | Holley |
Clearance Category | Air and Fuel Delivery |
Connector Color | Black |
Connector Gender | Male |
Connector Quantity | 1 |
Discount Percentage | 26-50% |
Emission Code | 5 |
Free Flow LPH | 450 |
Fuel Filter Included | Yes |
Fuel Sending Unit Included | No |
Fuel Tank Pressure Sensor Included | No |
Fuel Type | E85, Gasoline |
Gasket Or Seal Included | Yes |
Gasket Or Seal Material | Foam |
Grade Type | Performance |
Height | Adjustable |
Housing Material | Aluminum |
In Tank or External | In Tank |
Inlet Fitting Thread Size | 1/4Inch |
Inlet Quantity | None |
Inlet Type | NPT |
Internal Or External Strainer | External |
Lock Ring Included | Yes |
Material | Billet Aluminum |
Maximum Pressure | 60Pounds per Square Inch |
Minimum Fuel Tank Depth | 8 Inches |
Mounting Hardware Included | Yes |
Negative Ground | Yes |
NPT Thread | 1/4 NPT |
Outlet Fitting Thread Size | 1/4Inch |
Outlet Quantity | One |
Outlet Type | NPT |
Product Type | Fuel Pump Module |
Pump Type | Electric |
Regulator Included | Yes |
Sale Category | Air and Fuel Delivery |
Top Mount Diameter | 5Inch |
Universal Or Specific Fit | Universal |
Voltage | 12Volts DC |
Warranty | Limited 90 Day |
Wire Harness Included | Yes |
Wire Quantity | 2 |






Policies and FAQs
Return Policy
Fault reasons include but are not limited to:
- Buyer was shipped the wrong product
- Buyer was shipped a damaged product
- The product page had incorrect fitment and the part does not fit the Buyer's vehicle
Opened boxes, plastic bags, and other packaging are not considered damage (excluding single use items such as, but not limited to, liquids, software, and other components that cannot be reused/resealed).
FAQs
|Q. What is an Intermediate Brake Line?
|A. This is the line that runs from the front of the vehicle to the rear. On most vehicles it connects to a junction then you will have rear axle lines. On a few cars the intermediate lines will connect to the rear wheels. It is recommended to change the axle lines if you are replacing the intermediate lines.
|Q. What is included in a pre bent brake line kit?
|A. Our kits include all of the solid metal lines for that section of the vehicle
|Q. I need to return something - what's your return policy?
|A. We are happy to help! Please help us to help you by going to our return form and filling out the form as best as you can in order to request a return.
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Modern Day stands by our parts and is happy to accept returns within 30 days of purchase. Parts must be in new condition.
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If a part arrives damaged, or is defective, Please report it to us immediately. So we can handle it for your promptly.