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Description
Holley Diecast In-Tank RetroFit Fuel Module w/Return - 12-171Overview: 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
Overview:
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 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 7.5” to 12” deep to fit a wide variety of applications
- The low profile design is only 1.275" 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
- ¼” 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
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Application | Universal |
|---|---|
| Brand | Holley |
| Diameter | 4.8" |
| Emission Code | 3 |
| Free Flow LPH | 450 |
| Fuel Type | E85 |
| Fuel Type | Gasoline |
| Material | Die Cast Aluminum |
| NPT Thread | 1/4 NPT |
| Product Type | Fuel Pump Module |
| Warning | California Proposition 65 |
| Warranty | Limited 90 Day |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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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
4.5 ★★★★★
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Product Reviews
★★★★★ 5
my new favorite book
Format: Kindle
Ok so I never write reviews but this book was so good I felt the need to write this. Firstly your introduced to Huntyr you see her closed off hard core badass than towards the end you see the most subtle change and growth it’s amazing and the enemies to friends to lovers was just perfect, AND THE TWIST AT THE END GOT ME GOOD! You see one spicy scene the whole book but it doesn’t even MATTER BECAUSE THE BOOK WAS THAT GOOD. I’ve read 85 books in 2023-2024 so far and I’m pround to say this is my all time favorite. I’m so excited to read more of Emily Blackwoods books, this was my first time reading one of hers and I’m glad I did because HOLY!! Well done Emily well done
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Reviewed in the United States on February 23, 2024
★★★★★ 4
Fast paced romantasy you will not want to put down!
Format: Kindle
4.25 stars! I LOVED this book with similar vibes to Hush Hush, Fourth Wing, and The Serpent and the Wings of Night! It was fast paced with easy world building and will keep you turning the pages late into the night because you will not want to put it down!
Huntyr is a fierce bad@ss FMC trained to kill vampyres her entire life. She is sent on a mission to go to the academy and earn her spot into The Golden City. Upon arrival, she is forced to room with the delicious fallen angel, Wolf, who is the only one who knows about her assassin identity. The romance, the plot twists, the secrets revealed, the battles, and the tantalizing training scenes had me hooked! And that ending…. I’m holding my breath in need to know hell!
Read if you love:
🪽 Fae, Vampyres, Fallen Angels
🪽 Academy setting with magical trials
🪽 Forced proximity and slow burn
🪽 Rivals to lovers
🪽 Hidden identities and secrets
🪽 Tend your wounds
“𝘖𝘧 𝘤𝘰𝘶𝘳𝘴𝘦 𝘐 𝘸𝘢𝘴 𝘸𝘢𝘵𝘤𝘩𝘪𝘯𝘨 𝘺𝘰𝘶. 𝘐 𝘤𝘰𝘶𝘭𝘥𝘯’𝘵 𝘭𝘰𝘰𝘬 𝘢𝘸𝘢𝘺 𝘧𝘰𝘳 𝘢 𝘮𝘰𝘮𝘦𝘯𝘵, 𝘦𝘷𝘦𝘯 𝘪𝘧 𝘐 𝘵𝘳𝘪𝘦𝘥.”
“𝘐𝘧 𝘺𝘰𝘶 𝘸𝘢𝘯𝘵 𝘮𝘦 𝘰𝘯 𝘮𝘺 𝘬𝘯𝘦𝘦𝘴, 𝘏𝘶𝘯𝘵𝘳𝘦𝘴𝘴, 𝘢𝘭𝘭 𝘺𝘰𝘶 𝘩𝘢𝘷𝘦 𝘵𝘰 𝘥𝘰 𝘪𝘴 𝘢𝘴𝘬.”
“𝘠𝘰𝘶 𝘥𝘰 𝘯𝘰𝘵 𝘬𝘯𝘰𝘸 𝘵𝘩𝘦 𝘷𝘪𝘰𝘭𝘦𝘯𝘤𝘦 𝘵𝘩𝘢𝘵 𝘳𝘶𝘯𝘴 𝘵𝘩𝘳𝘰𝘶𝘨𝘩 𝘮𝘺 𝘷𝘦𝘪𝘯𝘴, 𝘣𝘦𝘨𝘨𝘪𝘯𝘨 𝘮𝘦 𝘵𝘰 𝘰𝘣𝘭𝘪𝘵𝘦𝘳𝘢𝘵𝘦 𝘢𝘯𝘺𝘰𝘯𝘦 𝘸𝘩𝘰 𝘭𝘢𝘺𝘴 𝘢 𝘩𝘢𝘯𝘥 𝘰𝘯 𝘺𝘰𝘶.”
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Reviewed in the United States on June 12, 2024
★★★★★ 5
Excellent Rivals to Lovers!!
Format: Kindle
The tension and banter between Huntyr and Wold was delectable. I absolutely love the fallen angel and all of his flaws. Huntyr is amazing too being a badass FMC with some major trauma. The world building was great and I enjoyed the training aspect of the story. The writing was immersive and was in the story the whole time. The ending had quite a twist that I hadn’t anticipated and made my jaw DROP. Excellent job! I also loved the narration. Laura is one of my fave narrators!
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Reviewed in the United States on August 15, 2025
★★★★★ 5
Unexpectedly emotional and packed with action!
Format: Kindle
Why do I suddenly want nothing more than a tiny wyvern to snuggle with?! It’s adorable and I absolutely love all of those moments! Wings of Stars was everything I’ve come expect from this powerful author duo. The fact that it’s written by two different people is completely transparent to the reader and they’ve brought us another world and characters that we’re all emotionally connected to and fully invested in! The injustice that we see from Alfemir in the many forms in which it comes is infuriating and makes me desperate for the conclusion of the story so they can all get what’s coming to them! I love all the guys right now, with one exception, and if you’re read it, you know exactly who I’m talking about. Bastian is hilarious - he was the comedic relief through an otherwise quite serious story. My heart bleeds for him and I can’t wait to see how he progresses through the series. Parts of Wings of Stars were unexpectedly emotional and of course I was left with my jaw on the floor at that cliffhanger! Next, please!
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Reviewed in the United States on October 18, 2025
★★★★★ 5
Niz !!!
Format: Kindle
First, let me say that I love both of these authors. I have been hooked by both ever since I discovered their writings, and I follow their social media groups closely. This book did not disappoint. Sure, there are several questions that I have, a couple of times I went huh (which I won't get into because I do not want to offer any spoilers) and I hated the cliff hanger lol, but I cannot lie and say I didn't love the book, because I did. The twist on angels was new and fresh, even though that is part of my questions. The beginning and ending were the better parts, the middle was needed but sorta bogged a little. Kieran was confusing but relatable. Niz is BY FAR the best character of the book, love NIZ. For me, Bastian is a close second, always loved the crazy ones. The other men were good, but Steele gets on my nerves and as of right now, IMO, he doesn't belong, but we will see how that goes. I have lots of questions, but this was an excellent start to a new series and I cannot wait for the next book. Highly recommend
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Reviewed in the United States on February 21, 2024