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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
4.2 ★★★★★
Based on 1776 reviews
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Product Reviews
★★★★★ 5
Absolutely work!
These are absolutely fantastic. Bygone are the days of sucking on some sugary sweet Candy. Xylo melts stick as they say they do. I have found that they don't stick to artificial teeth as well. They last for hours they're comfortable. The mint ones aren't overpowering. These are a dry mouth blessing. For sure use them at night and during the day.
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Reviewed in the United States on May 16, 2025
★★★★★ 5
Invaluable sleep/ dry mouth aid
Cannot live even one night without these Xylimelts. Taste great. Stick well to mouth. Remember: poisonous to dogs. Now we have a dog so I no longer buy the bottles of loose melts as I can spill in middle of night and lose track. Extremely nerve wracking. Using the sheets of melts which you punch out one at a time. Easier to insure dog’s safety.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 25, 2025
★★★★★ 5
They may have saved my life!
These are fantastic for people with dry mouth! They have been a lifesaver for me. I HIGHLY recommend them to everyone! I carry them in my bag as well. Thanks to the one who invented them. I feel normal again!!! Easy to pop in mouth and they last overnight too.
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Reviewed in the United States on April 24, 2025
★★★★★ 5
Wow!!!
Size: 80 ea
XyliMelts were recommended by my new dental hygienist who said she was told about them at a dental conference by a well known hygienist "guru".
I ordered them at around four in the morning because I was up as usual because if my chronic pain syndrome and the dry mouth caused by my pain pills.
I got them quickly via Amazon and have not been up again this time of night due to the dry mouth. Now I'm up due to the pain but can fall asleep quickly because of the XyliMelts, they work great!
I only use one at a time and it lasts around four hours and I put in another one and go right back to sleep. It's so easy to push the little tab out of the cellophane and just hold it on my gum for ten seconds and voila! No more dry mouth. I used to wake up with my mouth so dry there was no saliva at all in my mouth and parched was an understatement, my mouth felt like sandpaper!
Now it's always nice and moist and the taste is extremely pleasant (I didn't get the mint). I had to have two teeth extracted four days before Christmas and my dentist said it was due to the dry mouth and that he sees patterns like this in patients with dry mouth and I'd probably lose more teeth unless I came in for cleanings and check ups three times a year instead of two and we kept a really close eye on my teeth.
I'd been using Biotene gel but it wasn't keeping my mouth moist long enough. I'm extremely happy with XyliMelt! I'm also 100% sure I won't be losing any more teeth due to my night time dry mouth because it's a thing of the past!
Thanks to amazon prime shipping I got my XyliMelts very quickly, and my nighttime dry mouth is a thing of the past!
I know they don't claim to stop cavities but without the dry mouth and my new commitment to see my dentist three times a year and to always always brush my teeth before I fall asleep (no more Rolos in bed after I've done my final teeth brushing), I'm confident my dentist won't see a tooth loss pattern in my mouth.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 14, 2014
★★★★★ 5
Dry Mouth Tabs, Sugar Free
Size: 80 ea
Always have these in my purse and beside my bed. Mouth is dry and these help to keep it moisturized. Lasts several hours, nice taste, sugar free. I feel saw to use at night, sticks to my mouth wherever I place it. I have never had it slip out of my mouth at night and choke me. My dentist recommended them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 29, 2025