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Description
Holley In-Tank RetroFit Fuel Module- Returnless Style 12-133450 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.
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 |
|---|---|
| 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 |
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
4.1 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Good coffee warmer
Color: Black
Works very well. Wish I had bought it sooner.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 5
Excellent Warmer and the Rubber Pad is a very nice extra...
Color: 301 Black
... This really fits my cups perfectly... Just like it was made for these very cups. I wish I had found this one a long time ago and I am considering purchasing another one! Not Sure why they call it a "Coffee Cup Warmer", it would better known as a Beverage Warmer... but either way, it is a great unit and works great. Heat is great, I don't drink coffee, but it works equally well on Tea... This is an Excellent Value for the money.... Not throwing away cold tea and it stays HOT and mostly fresh! I wish I had found this a long time ago, much better than my older units. I will be purchasing another one in the near future! I think this unit is built well and will last a long time and I will... "Coffee Flavor" - No Thanks.... But it works great on HOT TEA! - Excellent Warmer and the Rubber Pad is a very nice extra... (It will help in not getting burned when I accidentally touch the heating surface by mistake! Excellent thought from the designer! You can adjust how hot to keep it and has a digital display to show the Temp that it is keeping the temperature of. I really like this item and I do highly recommend for Hot Tea and Coffee Drinkers, Works great for Hot Chocholate as well!... Doesn't let your drink get cold!
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Reviewed in the United States on January 23, 2026
★★★★★ 5
It's exactly what I was looking for!!
Color: 301 Pink, Color: 301 Pink
This one beats all the other mug warmers I researched on Amazon! That circular pad around the mug can come up and it's flat to the edges so I can sit my whole little flat bottom glass pot of tea directly on it and it keeps it hot, and I mean HOT all day! It also has 6 settings. The 130 barely keeps things warm for me but it goes up to 180 degrees! At 180 You can put your completely cold cup of tea that you left out all night and forgot about, turn this thing on and it will reheat your stale tea (that you probably shouldn't be drinking now) back up to pipping hot, steam coming off, you need to blow on it to take a sip levels! (Yes, I know you shouldn't drink tea that you left out all night but I'm just being real). If you want your hot drink to stay actually HOOOT but also have the option for it to be just lukewarm if that's you're thing, then this thing is for you! It also has a timer for shut off which is neat. The $20 spent on this has changed my life haha!
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Reviewed in the United States on June 5, 2025
★★★★★ 5
Upgrade from our last one, nice box, easy to read and adjust. Standard plug
Color: 301 Black, Color: 301 Black
One of our old coffee mug warmers finally died and we were looking for a replacement - this is way better than the old one. It comes in a nice printed box - so great for a gift. Standard AC plug and really easy to see button on front. This one shows the temperature and that's handy. It's just the right size for a good sized coffee mug and keeps it warm for hours - if the coffee lasts that long. It's easy to see that it's on so I can turn it off, but it also has auto off if you forget. I'm not really sure what the silicon topper is for, but it sure does look nice. Easy to clean when turned off and I have to say it's pretty professional looking.
It's a 30 watt model so it draws enough energy to keep that coffee warm and can heat up to 180 - that's too hot for my use but I'm sure you can warm something else with it.
Overall: A huge upgrade from our last one. Easier to read, use and clean.
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Reviewed in the United States on November 27, 2025
★★★★★ 4
Good mug warmer
Color: 301 Black
I like this mug warmer a lot. You can choose your temp and it keeps my tea very hot. I also like the auto shut off so I don't have the panic of "did I turn it off? My two minor complaints: 1. The rubber pad that comes with it doesn't stay in place and gets very hot. I just don't use it. 2. The controls are very sensitive. There are so many times that I pick up my mug and I change the temp or I change the timer because my finger brushed up against it. But, otherwise, it's a good value for the money.
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Reviewed in the United States on March 18, 2026
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