SKU: 68793107679

Holley Carburettor & EFI Fuel Pressure Regulator (HO12-879)

Sale price$215.55 Regular price$239.50
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Description

Holley Carburettor & EFI Fuel Pressure Regulator (HO12-879)HO12 879 BILLET FUEL REG 4 65 PSI 4 65 PSI, x2 3 8" NPT Inlet Outlet & x1 3 8" NPT Return With 1 8" Vacuum Port Part Number: HO12 879 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 aluminium for strength and durability. These regulators are adjustable from 4 65 psi and will handle both carbureted and EFI applications. They are offered with two port

HO12-879 - BILLET FUEL REG 4-65 PSI

4-65 PSI, x2 3/8" NPT Inlet/Outlet & x1 3/8" NPT Return With 1/8" Vacuum Port

Part Number: HO12-879

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 aluminium for strength and durability. These regulators are adjustable from 4-65 psi and will handle both carbureted and EFI applications. 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 aluminium 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

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
SKU: 68793107679

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Eli Korcz
Omaha, US
★★★★★ 1
Doesn't fit eco diesel
Color: 1 Set
Says fits ram eco diesel but it doesn't.
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Reviewed in the United States on November 20, 2025
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Nico Walk
Lowell, US
★★★★★ 5
Best oil hands down
Size: 5 L
This is the only oil I use now, my mechanic recommended it. Works great in my Mazda3, runs smooth and no leaks. More expensive but, worth it.
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Reviewed in the United States on May 22, 2026
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Greg
Waukegan, US
★★★★★ 5
Best Oil on the Market
Size: 5 L
I’ve used this and only this in my 15 Scion FRS since I bought it . I used to change it every 5k but I retired and now it’s a once a year oil change with less than 5k per year. The car has never had any issues with this oil . Since NASCAR changes oil in the cars every 500 miles I don’t whine about changing it once a year. $40 for oil is better than $10k for another built motor
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Reviewed in the United States on May 24, 2026
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Bill
San Leandro, US
★★★★★ 5
Satisfied!
Size: 5 L
I absolutely love this product—I've already used it multiple times. The price is affordable, too. Thank you to the seller! Five stars!
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Reviewed in the United States on May 27, 2026
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Yesuaini99
Draper, US
★★★★★ 5
I just got it changed about 30 min ago and the engine sounds like a little cat
Size: 5 L
My Audi factory setting says I should use VW 508.00. Somewhere online it says 5w-40. It's 82000 miles and I decided to give it a shot to go 0W-20 which is what VW508.00 is. I just got it changed about 30 min ago and the engine sounds like a little cat. The gas pedal feel is very smooth, there's definitely less resistance when pushing forward. In Sports mode driving, the engine is not as loud and the lag or drag is noticeably less. And when it hits 100k, I will do a engine flush to see if I can get further improvements. So far, I really love Liqui Moly. I used to use it on my S500 and it was very smooth. A little more money goes a long way! Don't settle for less for your German cars. Update: I just did another 1000 miles in a week to Vegas and back. The fuel economy improved about 20%. The power increase is amazing. I could notice when I am going fast, the sustained speed at high speed is easy and continuous, It doesn't just hit a snag when your foot is off the pedal. And the engine is definitely a lot quieter and smoother. I am amazed at the overall improvement after using this oil. No other oil will do from now on.
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Reviewed in the United States on May 17, 2018

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