SKU: 48612885273

Adjustable Billet By-Pass Regulator-6AN - 12-880

Sale price$93.57 Regular price$103.97
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Description

Adjustable Billet By-Pass Regulator-6AN - 12-880Overview: Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. They are precision machined from 6061 T6 billet aluminum for strength and durability. These regulators are adjustable from 4 65 psi and will handle both carbureted and EFI applications. A second pressure spring is included allowing you to increase the fuel pressure range up to 65 psi for EFI systems. They are offered with two port sizes, 3

Overview:

Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. They are precision machined from 6061-T6 billet aluminum for strength and durability. These regulators are adjustable from 4-65 psi and will handle both carbureted and EFI applications. A second pressure spring is included allowing you to increase the fuel pressure range up to 65 psi for EFI systems. They are offered with two port sizes, 3/8" NPT or 6AN to adapt to your new or existing fuel lines. So, if you are currently running a carbureted system but plan to upgrade to EFI in the future, these regulators will have you covered either way.

Features:

  • Adjustable from 4-65 psi for precise fuel pressure adjustments
  • Constructed of billet aluminum with a black anodized base and a clear anodized top for good looks
  • Used in systems with a return line back to the tank
  • (1) 6AN O-ring Inlet; (1) 6AN O-ring Outlet; and (1) 6AN O-ring return
  • Includes fitting for manifold reference
  • Includes an 1/8 NPT gauge port
  • Boost Reference - 1:1
  • The 4-15 psi carbureted spring comes installed in the regulator

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Brand Holley
Color Black
Emission Code 5
Fuel System EFI/Carb
Fuel Type Gasoline
Inlet Size 6 AN O-Ring
Material Aluminum
Outlet Size 6 AN O-Ring
Product Type Fuel Pressure Regulator
Return Size 6 AN O-Ring
Style Bypass
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:
  1. 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
SKU: 48612885273

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4.8 ★★★★★
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Sunshine
Birmingham, US
★★★★★ 5
5 stars!!! Just what I was looking for!
Size: 30mm, Color: Brown/Silver-Tone/White/30mm
This watch was just what I needed! Elastic bands had become too tight on my wrist and added to problems I was having. Quality is excellent as would be expected from Timex! The indigo light is an added bonus. Very nice watch for anyone! Easy to read quickly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
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S.
Alexandria, US
★★★★★ 4
Perfect EXCEPT for the Noise
Size: 30mm, Color: Pink/Rose Gold-Tone/Cream/30mm, Size: 30mm, Color: Pink/Rose Gold-Tone/Cream/30mm
My ideals for a watch are: full numerals, easy to read (good contrast and numbers, lines for the minutes and hours), light up function, case under 33mm, swappable bands, and preferably cute, in either silver color or rose gold color. This one checks all the boxes... And is the only one I've found which does. You can see on the picture that I replaced the band. Now here's the problem... The watch is LOUD! The analog watch I'm replacing is entirely quiet except when brought to the ear. This one... I hear it from feet away. My husband hears it from feet away too. I've tried two of the same model and they're equally loud. It gets distracting for me. Not at night, as the blankets mute it up, but during the day. Holding my phone typing this up, or during work, conversations... even when driving I hear it over the engine and traffic noise, because the driving position brings it closer to me, tick tick tick tick. It's impressive how that sound can carry. I've read on the internet a few people saying they improved the noise of their Timex watches by removing the hand that does the seconds. I love having it but I might just get desperate enough to try this little operation. This is the perfect watch for me except for that problem. So sad. (EDIT: I did end up trying to remove the seconds hand. It did quiet down the watch. Unfortunately, I also broke the watch in the process of putting it back together. I've decided to cut my losses and I'm now wearing a Fossil Carlie Mini (roughly $100, and available on Amazon, entirely quiet). Doesn't light up or have full numerals but what can you do. I wear a cheap digital that can light up at night and make do.)
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Reviewed in the United States on April 17, 2026
M
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Mrsmama
Houston, US
★★★★★ 5
Love it
Size: 30mm, Color: Pink/Rose Gold-Tone/Cream/30mm, Size: 30mm, Color: Pink/Rose Gold-Tone/Cream/30mm
This is a great simple watch. It fits my wrist well and is very comfortable. I really like the champagne/pink band along with the rose gold face. I didn’t realize if you push the button on the side of the face that it lights up for easy reading in the dark. Nice detail! Feels like really good quality! I hope it lasts me a long time.
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Reviewed in the United States on March 17, 2026
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orlando
Port Orchard, US
★★★★★ 5
Beautiful and reliable!
Size: 30mm, Color: Pink/Rose Gold-Tone/Cream/30mm
I just love it. It is beautiful, comfortable and I love the back light! I tried two or three smart watches that were reasonably priced and none of them worked well. I did not want to spend several hundred dollars for a watch. I finally decided on a good reliable watch and chose time mix. I’m really glad I did.
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Reviewed in the United States on April 6, 2026
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Pamela
Draper, US
★★★★★ 5
Nice watch!!
Size: 30mm, Color: Pink/Rose Gold-Tone/Cream/30mm
Works great! I've got a larger wrist and it fits me perfectly! I love the Indiglow feature! I can see what time it is in the middle of the night!!
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Reviewed in the United States on April 19, 2026

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