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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
4.7 ★★★★★
Based on 1881 reviews
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Product Reviews
★★★★★ 4
Has some flaws but overall not bad
Color: Coffe Wood
I have a 13 pound Jack Russell mix who is an aggressive chewer and gets bored while I am working. I find that a frozen treat situation keeps him busy for 30-45 minutes in his kennel so I can get some quiet time. I've been stuffing the Kong and freezing it, but since I only have one, I have to remember to do it. I liked the option of keeping a bunch of frozen treats to refill the toy at will. I've been eyeballing the Pupsicle brand, but they are really expensive. So for around $10, I figured this was worth a try.
Pros:
So far seems tough. I unscrew it after he finishes the frozen treat so he can lick out the remains, then I take it away from him. I'm sure if I let him he would eventually chew it to shreds.
The design is cute. Although you can't see the fact that the treats are brain shaped once it is in there, it does give me a kick to put a little brain in the skull.
So far no issues with screwing the top of the skull on or taking it off
The inner cavity is quite big. I filled the molds about 3/4 full and there is still a lot of room in the skull. If you have a bigger dog you can fill the molds to the top (just don't over-fill or it won't fit inside)
If you make a big batch of treat filling, you can freeze the rest in those silicone muffin molds, they fit perfectly. Just don't over-fill.
With a 3/4 full mold, made with pumpkin, peanut butter, oats, and a little water, it takes my dog about 45 minutes to get all of the treat out.
Cons:
It's huge and heavy. It's bigger than my dog's skull. But, since he is just trying to eat the brains, it's not like it needs to be lightweight.
The rope is a bad idea. First, it gets gross. Second, my dog has chewed halfway through it already. This seems like a hazard for both choking and bacterial contamination.
The biggest hole is big enough that my dog's bottom jaw gets a little stuck in there. So far he's always able to get it out, but it is a point against the toy.
Overall, its not bad. Not perfect, but serves the function. I'd like to see a slightly smaller, slightly lighter version for dogs under 20 pounds, and lose the rope.
If you do buy this, make sure to take it away from your dog once they have cleaned out the treat.
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Reviewed in the United States on June 5, 2025
★★★★★ 5
Chew on this!
Size: Large
Yes this toy actually is the ONLY one out of 50 others that has lasted longer than a day! He’s happily had this and it keeps him interested! Best one yet!
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Reviewed in the United States on March 24, 2026
★★★★★ 5
Great for aggressive chewers!
This item has held up for 4 months so far! My dog loves it, carries it everywhere. It's one of his favorite toys and he's been through so so many but this is the only one to hold up. However there are CONS! We have dubbed this bone "the cheese grater". My dog loves to bring his toys to us and press them against our legs to get our attention. So after a little chewing, the ends become very rough. When he runs by us with it in his mouth or presses it up against our legs, it tears our skin up! Also, the bone is very heavy so we have to watch out for our toes because Hank will drop it right on our feet if we aren't paying attention. Other than that, it's great! When it gets dirty, I just throw it in the dish washer and rinse it off after the cycle is done. Cleans up nicely! Would buy again if needed! Recommend for aggressive chewers!
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Reviewed in the United States on July 12, 2023
★★★★★ 5
This is the one for your dog
Size: Large
My 40 pound Mini Aussi is a very agressive chewer and goes through toys lightning fast===untill I got her this bone. She has had it several weeks and it still survives. She takes it everywhere she goes and it is, by far her favorite toy. I think she has met her match. One warning though. We have hardwood floors and it gets a bit noisy at times. That's just a small issue though. If Dixie ever destroys this (doubtful) I will not hesitate to buy another. Great toy and I coming off and she coming off and she wqw cfully recommend it. WARNING{ This is/was a great toy for my 50 pound Austrilian Sheperd, However it is not indestructable. It lasted about 3 months until the white parts started coming off and she was injesting it.
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Reviewed in the United States on September 20, 2023
★★★★★ 4
Great product
Size: Large
I was hesitant about buying this product, but I'm so glad I did. My dog (who is a very aggressive chewer) absolutely loves this toy. He will spend hours chewing on this toy. He carries it around the house and will show it off to anyone who visits. Since getting this toy for him, he has stopped chewing up other toys and focuses his chewing and destructive chewing on this toy. He has not managed to destroy this toy as of a month of chewing.
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Reviewed in the United States on February 8, 2024