SKU: 43769262318

Adjustable Billet By-Pass Regulator-3/8 NPT - 12-879

Sale price$93.57 Regular price$103.97
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Ships within 48 hours · Estimated delivery Sep 20 - Sep 25

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Description

Adjustable Billet By-Pass Regulator-3/8 NPT - 12-879Overview: 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) 3/8” NPT Inlet; (1) 3/8” NPT Outlet; and (1) 3/8” NPT Return Port
  • 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
  • Compatible with diesel fuel and E85

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 3/8 inch NPT
Material Aluminum
Outlet Size 3/8 inch NPT
Product Type Fuel Pressure Regulator
Return Size 3/8 inch NPT
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: 43769262318

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4.7 ★★★★★
Based on 28 reviews
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SavanahClark
Draper, US
★★★★★ 5
Love this stuff!
Style: SPF 50
I use this every day and I love how it is frangrance free and creamy. I have a very fair complexion and I will say it leaves a slight white cast but it doesn’t bother me because it almost makes my fairness more creamy looking. My skin texture has improved since wearing it daily and no allergies from it. I highly recommend especially if you have fairer skin otherwise it may leave a cast .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 19, 2023
D
Verified Purchase
Dawn
Lexington, US
★★★★★ 5
Excellent mineral sunscreen with minimal white cast.
Style: SPF 50
This is one of the healthier sunscreens I’ve found so far. You’re not likely going to find a mineral sunscreen that doesn’t leave some white cast. However, this one rubs in pretty good with minimal cast. You can dab on and rub in fairly easily… as long as you don’t use too much the white cast should be minimal. I am not sure how well this would work on darker skin tones. My arms are a medium skin tone… my legs are more of a light-medium tone. I prefer mineral sunscreens, and this is the best one I found so far and compatible to Supergoop mineral play. If you liked that one, you would likely enjoy this Coola one too.
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Reviewed in the United States on January 25, 2025
K
Verified Purchase
Kaitlyn Jacobson
Houston, US
★★★★★ 1
Would not recommend
Style: SPF 50
I literally never write reviews but felt compelled to write one for this sunscreen because I was very caught off guard by all the positive reviews. This sunscreen leaves the most insane white sheen that never soaks in and gets on EVERYTHING. I put this on and drove to the beach and had sunscreen on my car seat, the steering wheel, the center console, the door, EVERYWHERE! It took forever to clean up and was such a hassle and that was after having let the sunscreen soak into my skin for an hour. Also the sunscreen is really thick and difficult to spread and makes you look ghostly white. Plus, the sunscreen has a really odd odor that reminded me of play dough? That might not be a negative thing for everyone but I found it unpleasant. There are definitely better mineral sunscreens out there. For the price I expected a much better product.
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Reviewed in the United States on June 11, 2025
J
Verified Purchase
John Reid
Los Angeles, US
★★★★★ 3
Sticky and white
Style: SPF 50
The sunscreen has a very sticky and thick texture. It will keep you from getting sunburnt, but it will also leave you with a white color.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 22, 2024
B
Verified Purchase
Brona Buys
Waukegan, US
★★★★★ 4
Good sunscreen
Style: SPF 50
Super good coverage and it lasts a long time in the sun and even through water activities. The only negative is the white cast. Not as bad as others but just be aware it doesn’t fully rub in.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2025

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