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Description
Holley In-Tank RetroFit Fuel Module-Returnless Style - 12-131Overview: 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. Now you can convert your factory tank or fuel cell to an in tank EFI fuel system quickly and easily! And add the benefits of a Holley
Overview:
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.
Now you can convert your factory tank or fuel cell to an in-tank EFI fuel system quickly and easily! And- add the benefits of a Holley Hydramat in the process! The conversion is easily accomplished with basic tools and requires no welding or fabrication. The billet aluminum module design includes a billet 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 550 EFI or 700 Carb HP (HP Rating @ 60 PSI at 13.5 Volts / 10.4 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 8.5” 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
- 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 that you might encoun
- Black anodized 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 400LPH 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!
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Application | Universal |
|---|---|
| Brand | Holley |
| Diameter | 4.8" |
| Emission Code | 3 |
| Free Flow LPH | 255 |
| Material | Billet Aluminum |
| NPT Thread | 1/4 NPT |
| Product Type | Fuel Pump Module |
| Warranty | Limited 90 Day |
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
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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
4.7 ★★★★★
Based on 1915 reviews
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Product Reviews
★★★★★ 5
Clean, Long‑Lasting Protection Without Irritation
Scent: Bergamot & Hinoki, Size: 2.6 Ounce (Pack of 1)
This deodorant is a great pick if you want something aluminum‑free that actually holds up through a full day. The formula goes on smooth, doesn’t feel sticky, and dries down quickly without leaving residue on clothes. It has a clean, fresh scent that isn’t overpowering, and it stays consistent as the day goes on.
What I appreciate most is how gentle it is — no burning, no irritation, and no chalky buildup. Even with the softer feel, the protection is strong and lasts well through heat, errands, and everyday activity. It’s one of those deodorants that feels more “skincare‑forward” than chemical‑heavy.
If you’re looking for a natural option that still delivers real staying power, this one is a solid upgrade.
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Reviewed in the United States on May 23, 2026
★★★★★ 3
Wonderful, but also couldn't stand up to the funk
Scent: Black Rose & Oud, Size: 2.6 Ounce (Pack of 1)
This was my first time using this brand and I used it faithfully for about 9 months.
I've been using more natural and aluminum-free deodorants for several years now. I have sensitive underarms so I stay away from "clinical strength" or a lot of chemicals. I've tried both ladies' and men's brands (I'm a woman) and they only seem to work for a little while before they completely stop working and I have to switch to something new (or back to an old one). I decided to give this one a try after seeing it pop up on Amazon a lot and also because the one I was using isn't sold in stores and would sometimes take a week or more to get to me.
My first impression of this deodorant was that I like the compact, round packaging and how easy it is to use (the bottom twists very smoothly). Secondly, IT SMELLS AMAZING. Black rose and Oud is such a delicious scent - lightly floral, sweet, a little powdery, and a little musky. Every time I applied it, I kept falling more in love with the scent. And it also applied to my underarms very smoothly and without any pulling or roughness.
It's worth noting that I started using this deodorant during a heat wave; we had about three weeks of temperatures between 90-100 degrees F with 75-95% humidity. Surprise surprise, this deodorant held up! Mind you, it's deodorant and not antiperspirant, so, yes, I did sweat, but, no, I did not smell. I applied it once a day (or the night before) and had no issues. This deodorant also held up exceptionally when I was exercising and it did not leave me smelling bad at all after workouts.
Now, where this deodorant DID NOT HOLD UP is when it came to hormone changes and (emotional) stress. Whenever that time of the month came around, the deodorant significantly weakened and I had to apply it again during the day. For me, that's actually normal and I pretty much have that happen with any deodorant. It's performance during stress was pretty terrible though. I went through a few months of intense mental/emotional stress and this deodorant completely failed me. The second I got anxious or stressed out, my armpits would start to pool and turn into a swampy mess and I would immediately smell terrible. Not once did the deodorant hold up to my stress sweat or funk, which was very disappointing since I liked it very much outside of that one issue.
I ended up just throwing it away (since I wasn't sure when the stress would stop) and going back to my previous deodorant that worked wonderfully, now sells on Amazon, and I highly recommend: Kosas! It is pricey like this one, but the main selling point for me is that it contains AHA and BHAs that stop the funk and also brighten (and keep bright) the underarm area. It also neutralizes razor burn.
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Reviewed in the United States on April 5, 2025
★★★★★ 5
Fabulous deodorant and I get compliments on scent
Scent: Bergamot & Hinoki, Size: 2.6 Ounce (Pack of 1), Scent: Bergamot & Hinoki, Size: 2.6 Ounce (Pack of 1)
I've always had problems with deodorant. Irritation, complaints from ladies on the scent. I've even had a few that discolored my pits. The cheaper ones leave marks on clothing. To be fair, I was introduced to this by Thrive MRKT; and the price is cheaper there. BUT, after running out, and Thrive having low or zero stock, getting this from Amazon 12 hours after ordering, I realized this is an essential item for me. Good ingredients and lovely silky texture, you don't notice it's working. Dries super fast, not sticky or heavy texture, feels lightweight/invisible. I've even had deodorant in the past where i'd flap my arms or blow on pits hoping it would dry. No such ridiculousness here. 5/5 Stars highly recommend. Premium product and well worth the price. I even get compliments from my lady friends on this sent.
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Reviewed in the United States on April 25, 2026
★★★★★ 4
I like this EXPENSIVE deodorant
Scent: Bergamot & Hinoki, Size: 2.6 Ounce (Pack of 1)
I really like the deoderant, as it seems to work well and goes on easily with no staining, etc. The reviews seem to emphasize the wonderful smell, but it is very mild and I find the smell minimal. It is rather expensive for a deodorant, but it works, so I will leave that up to the individual. Not sure if I will purchase again, but only because of the price, but I do like the product.
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Reviewed in the United States on March 22, 2026
★★★★★ 5
Perfect for Sensitive Skin Without Feeling Heavy
Size: 3 Fl Oz (Pack of 1)
I have very sensitive skin and finding a facial moisturizer that hydrates well without causing irritation can be a challenge. This one has been fantastic. It feels lightweight going on but still gives enough moisture that my skin stays soft and comfortable all day. No strong fragrance, no burning, no breakouts, just simple and effective skincare.
I also really like that it layers well under makeup and doesn’t leave my face feeling greasy or sticky. The ceramides and hyaluronic acid make my skin feel healthier and more balanced overall. Vanicream continues to be one of the few brands my skin consistently tolerates well. I’ve already repurchased this and will keep using it.
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Reviewed in the United States on May 19, 2026