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Description
Holley Diecast In-Tank RetroFit Fuel Module Returnless System 12-159450 LPH 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) Of course there are many variables, estimates are based on gasoline. 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
450 LPH 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) Of course there are many variables, estimates are based on gasoline.
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 7? to 12? deep to fit a wide variety of applications
- The low profile 5 inch diameter design is only 1.275 inch 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
- Die cast 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
Specs:
| Application | Universal |
|---|---|
| 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 |
| Finish | Black |
| 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 | One |
| Inlet Size | 1/4 inch NPT |
| Inlet Type | NPT |
| Internal Or External Strainer | External |
| Lock Ring Included | No |
| Material | Die Cast Aluminum |
| Maximum Pressure | 60Pounds per Square Inch |
| Minimum Fuel Tank Depth | 7 inches |
| Mounting Hardware Included | Yes |
| Negative Ground | Yes |
| NPT Thread | 1/4 NPT |
| Outlet Fitting Thread Size | 1/4Inch |
| Outlet Quantity | One |
| Outlet Size | 1/4 inch NPT |
| Outlet Type | NPT |
| Product Type | Fuel Pump Module |
| Pump Type | Electric |
| Regulator Included | No |
| Sale Category | Air and Fuel Delivery |
| Top Mount Diameter | 5Inch |
| Universal Or Specific Fit | Universal |
| Voltage | 12Volts DC |
| Warning | California Proposition 65 |
| Warranty | Limited 90 Day |
| Wire Harness Included | Yes |
| Wire Quantity | 2 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.9 ★★★★★
Based on 168 reviews
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Product Reviews
★★★★★ 5
Hands down best hammock accessory
Color: Green, Size: Medium
Tried many, this pillow is perfect. Not too big, not too small. Soft yet supportive. It’s also well made and super comfy. Plus it packs up nicely. I’m a new Wise Owl convert, everything I’ve ordered so far has been excellent quality. Just wish they kept the colors consistent so it all matched (minor annoyance). You need this.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 5
Comfy, soft, packable, and cool
Color: Green, Size: Small
I absolutely love this pillow. It's well constructed but not OVER constructed - it is soft, comfortable to my neck and head - very packable and stays pretty cool - like the 'other side' of the pillow. I also appreciate the stuff sack that Wise Owl sends with it. I was able to get this down into my right side of my Redwing 50 pocket. This thing fits everywhere and while some folks think its a luxury, when you get to be my age - comfort is something that you take for granted. I feel well rested after a night on this bad boy.
Shape always fluffs back out. I think it's a great value at the price point it is at compared to other pillows in this range. Very very durable, like all Wise Owl products I own. Easily fits snugly into the bag, and can mold around you depending on how you want to adjust it. I don't use a sleeping pad, just this for my neck support and it really is worth every penny.
Water resistance - I'm not sure as I've not had the opportunity to see it but I feel like with the material it is, water would probably bead off in light amounts.
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Reviewed in the United States on December 20, 2025
★★★★★ 4
It's comfy but not UL nor packs down well.
Color: Blue, Size: Medium
Don't get me wrong, overall this is a very good mini portable camping pillow that has slightly bigger length, width & thickness than most of the other name brand inflatable camping pillows that cost $20 extra, which is nice for having more pillow/support to work with while you sleep, & it being foam filled rather than inflated means you don't have to worry about it deflating on you overnight out in the wilderness where you likely don't have a backup!..
All that is great until it's time to pack it back up..
It doesn't compact down small, nor easily. You have to put a little elbow grease into tightly rolling it up like a burrito, 🌯
And even Then, it's still a bit of a fight to squeeze it back into it's compression sack, but Still winds up being a bulky bulgy chunk of space real estate in my pack, and if you're a serious hiker you know every ounce counts as well as every inch of space that's taken up by bulky gear.
I didn't consider returning or replacing it for something else until wayy past the return window.
Again, it's not bad at all for your average travel or weekend camping trips, but for expedition, section or thru-hiking it's not the best choice to go with when budgeting weight & space in your pack.
I went with a similarly priced Teton camping pillow that is 18" by 12", also filled not inflated so it's basically the same thing but ever so slightly smaller in circumference, yet packs down noticably easier & more compact, weighing slightly less & taking up noticably less space in your pace as well.
I can easily stuff it in the outer back kangaroo pouch on my Osprey Atmos AG 50L.
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Reviewed in the United States on January 28, 2025
★★★★★ 5
Soft and Confortable
Color: Rose, Size: Medium
Excellent travel and camping pillow. Soft and confortable. My wife loves it.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Perfect, compact, portable, comfort.
Color: Grey, Size: Small
Got the small one. It's perfect size for camping. I saw other comments with pics of medium and looked too big for portable use. I like down feather pillows and this one is really close to same feel. I recommend it 100%. And I may even buy another one.
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Reviewed in the United States on November 7, 2025
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