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Description
Holley Diecast In-Tank RetroFit Fuel Module w/Return 12-171Are you interested in an EFI retrofit kit, but just can't get past the complication of the fuel system? Available in return and returnless versions, you can rest assured Holley has the solution you need for your EFI fuel pump woes. Now you can convert your factory tank or fuel cell to an in tank EFI fuel system quickly and easily! The conversion is easily accomplished with basic tools and requires no welding or fabrication. The aluminum 5 inch
Are you interested in an EFI retrofit kit, but just can't get past the complication of the fuel system? Available in return and returnless versions, you can rest assured Holley has the solution you need for your EFI fuel pump woes.
Now you can convert your factory tank or fuel cell to an in-tank EFI fuel system quickly and easily! The conversion is easily accomplished with basic tools and requires no welding or fabrication. The aluminum 5 inch diameter module design includes a die cast pump hanger bracket to control pump vibration while also providing a low profile design to fit where space is at a premium. Holley's innovative clamping system and integrated fuel pump makes it easy. Once installed, hook up your fuel lines and your power source/ground and you're off and running! NO hassle!
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. Individual systems will vary based on fuel system design, regulator type, fuel cell location, etc...
Features:
- The easiest way to convert your vehicle to an in-tank, EFI fuel system
- Installs in any fuel tank from 7.5Ó to 12Ó 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
- Die cast aluminum construction for corrosion resistance and long lasting good looks
- _Ó 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
About Holley
Holley Performance Brands is the undisputed leader in carburetors, fuel pumps, fuel injection, intake manifolds, fuel injection, and fuel systems.
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
4.8 ★★★★★
Based on 863 reviews
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Product Reviews
★★★★★ 5
Lovely Fluffy Faux Fur Blanket
Color: White, Size: Throw Size - 50" X 60"
Lovely, very soft & lightweight. It is a bit thin causing me to worry it might not be overly warm or durable, yet is just what I was searching for to do a photo project.
Thanks!
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Reviewed in the United States on March 11, 2026
★★★★★ 5
Beautiful throw
Color: Aqua, Size: Throw Size - 50" X 60"
great quality and so soft and warm......perfect color and good price! very happy with our purchase.
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Reviewed in the United States on March 14, 2025
★★★★★ 4
Super Comfortable and Soft
Color: White, Size: Throw Size - 50" X 60"
Feels luxurious and silky soft! It is not very thick but does keep me very warm. In fact I have to kick my legs out sometimes when I’m using it. It does shed A LOT! Will need to update after washing to see if that reduces the shedding. But it is beautiful and comfy. Is give it a 7 out of 10 for quality because of the shedding and the top and underneath pieces are only secured on the edges, which makes it move around and I have to grab the edges and shake to get its form back to normal. I would definitely purchase again. Especially if the shedding reduces it goes away after I run it through a wash cycle. I do NOT recommend drying in the dryer. It will mat I can almost guarantee that. Almost all blankets like these do if you dry them in a dryer with heat. Maybe no heat tumble might work, but NO heat.
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Reviewed in the United States on November 11, 2024
★★★★★ 5
Get it fluffy cozy
Color: Grey, Size: Throw Size - 50" X 60"
Great quality looks good as a accent to a bed ensemble
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Reviewed in the United States on September 20, 2025
★★★★★ 5
THE BEST, LEGIT FLUFFY
Color: Black, Size: Queen/King Size - 80" X 90"
This is exactly what I wanted, had to return two other blankets before I found this one. It is SO FLUFFY and soft! The pile is almost 3” long.. it is so fluffy I keep losing my remote control on it. So 5 stars I will continue to buy this blanket for every bedroom in my house we are all girls and we all love big fluffy blankies!!
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Reviewed in the United States on March 8, 2026
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