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Description
Adjustable Billet By-Pass Regulator 3/8 NPT Kit 12-879KITAdjustable billet by pass return style fuel pressure regulator 3 8 NPT Kit with Fuel Pressure Gauge and Adapter Fittings Boost Reference 1: 1 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
Adjustable billet by-pass return style fuel pressure regulator 3/8 NPT Kit with Fuel Pressure Gauge and Adapter Fittings Boost Reference - 1:1
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 have 3/8 NPT port sizes 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
- 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
Specs:
| Adjustable | Yes |
|---|---|
| Brand | Holley |
| Color | Black |
| Emission Code | 5 |
| Fuel System | EFI/Carb |
| Fuel Type | Gasoline |
| Gauge Included | Yes |
| Gauge Port Included | Yes |
| Grade Type | Performance |
| Inlet Gender | Female |
| Inlet Port Diameter | 3/8Inch |
| Inlet Port Quantity | 1 |
| Inlet Size | 3/8" NPT |
| Inlet Type | NPT |
| Material | Aluminum |
| Maximum Pressure | 65Pounds per Square Inch |
| Minimum Pressure | 4Pounds per Square Inch |
| Mounting Bracket Included | Yes |
| Mounting Type | Inline |
| Outlet Gender | Female |
| Outlet Port Diameter | 3/8Inch |
| Outlet Port Quantity | 2 |
| Outlet Size | 3/8" NPT |
| Outlet Type | NPT |
| Port Quantity | 2 |
| Product Type | Fuel Pressure Regulator |
| Rebuildable | Yes |
| Return Size | 3/8 inch NPT |
| Style | Bypass |
| Vacuum Port Quantity | 1 |
| Warning | California Proposition 65 |
| 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
- 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
4.8 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Excellent Strong Bags - Quick-Tie Feature is Genius!
Scent: Unscented, Size: 21 Count (Pack of 1)
These Glad Quick-Tie trash bags have become my go-to garbage bags for the kitchen. I've been through several boxes now and they consistently perform exceptionally well.
The quick-tie drawstring closure is the standout feature. Instead of fumbling with traditional bag ties or trying to tie knots that never quite work, I just pull the red drawstring tabs and the bag closes securely in seconds. It's so much faster and cleaner, especially when dealing with heavy or messy loads. The closure stays tight and doesn't come undone during transport to the outdoor bin.
Strength is impressive for 30-gallon bags. I regularly fill these to capacity with kitchen waste, food scraps, packaging, and they hold up without tearing or leaking. The plastic feels thick and durable - I haven't had a single tear or puncture even when dealing with sharp edges from cans or rigid packaging. No leaks, no messes on my floor.
The 30-gallon size is perfect for my standard kitchen trash can. The bags fit properly without being too loose or too tight, and there's enough material to fold over the rim for a secure fit. When it's time to change the bag, removal is effortless thanks to the quick-tie system.
Value is decent - while these aren't the cheapest bags on the market, the convenience and reliability make them worth the slight premium. Not having to deal with bag failures, spills, or difficult closures saves time and hassle. The 21-count box lasts me about three weeks with daily use.
I appreciate that Glad has perfected what seems like a simple product. These bags just work reliably every single time. Highly recommend for anyone tired of dealing with inferior trash bags!
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Reviewed in the United States on December 6, 2025
★★★★★ 5
Would recommend
Scent: Unscented, Size: 70 Count (Pack of 1)
Will continue buying these since other trash bags I’ve noticed a lot of leaking. Great for cleaning out cat litter can hold up a good amount of weight.
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Reviewed in the United States on May 4, 2026
★★★★★ 5
Fantastic towels at a great price on subscribe and save
Package Size Name: Family, Size: 286 Count (Pack of 6)
As an oil painter, Viva are the gold standard for wiping brushes and whatever else you need a towel for while painting. I bought them for that purpose. I didn’t count on loving these paper towels for every other paper towel duty in my home.
These paper towels are incredibly hardy, and perform much like a thin cloth towel. They last and last. I can rinse and reuse a towel to clean all the kitchen counters plus clean the stainless steel gas cooktop. All with one section of paper towels. I couldn’t do anything close with any other brand I’ve used.
I love the select a size feature. For quick cleanups, one section is more than adequate. I’ve used one section in my swifter handle when I’m out if swifter cloths (which is always- I never buy those things), and used both sides of the towel to dust mop my wood floors. I use these to dust my home with a little spray wax, cleaned the tires on my car with no towel shredding, and scrubbed the filthy barbecue with bleach cleanser, rinsed it out, and scrubbed some more. These towels are tough yet soft, sturdy and disposable. They are soft enough to use as a napkin, and absorb like crazy.
I buy mine by the case from Amazon subscribe and save every three or four months, and love saving 20% doing so.
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Reviewed in the United States on August 7, 2019
★★★★★ 5
Viva is the best and, by usage, the most economical paper towel
Package Size Name: Family, Size: 286 Count (Pack of 6)
Still basically the same Viva. I compared this version with the prior one I still had on hand. This one has a slightly woven vs felted appearance and the side against the roll is slightly rougher or textured, while the outside face is slightly smoother. The inside face looks as if it might leave lint, maybe. Half sheet size is the same and both versions absorbed one ounce of water. Both seemed equally thick, judging by the amount of see-through-ness, both dry and wet. Both seemed equally tough wet. This version clings to the roll less firmly, too.
Viva is the very best AND the least expensive paper towel available based on how long it lasts. It takes weeks to go through a roll, especially if you realize a sheet can be reused to wipe up more than one small mess while you cook and you need many fewer to clean up the big messes. Use one to dry a pot and leave it by the cutting board to wipe up. If you're used to ordinary paper towels, there may be a period of adjustment, but try to take just one sheet instead of the 4 you may think you need; you can always get another. They can scrub an iron skillet or pat dry your food. They make the best handkerchief substitutes, too. One subscribe and save box lasts me about a year.
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Reviewed in the United States on December 11, 2019
★★★★★ 5
Viva for the win!
Package Size Name: Family, Size: 286 Count (Pack of 6)
Best paper towels, sad they don't sell them in most stores anymore but...thankful I can still get on amazon...they are stronger than other paper towels, softer but not weak and great for body use IF you needed to..can you tell I ran out of tissues? Seriously the best! Bounty who?
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Reviewed in the United States on January 5, 2026