SKU: 27929156033

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

Sale price$119.67 Regular price$132.97
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 9 - Jul 14

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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:
  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: 27929156033

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 1828 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
D
Verified Purchase
Darcie
Pawtucket, US
★★★★★ 5
Fun little ball!
Fun little ball! Glad I got the football version the regular ball would be a choking hazard for my Great Dane. The ball rolls and shakes on the floor which at first was scary, but now she loves it! She nudges it all over the floor to keep it moving, keeping her entertained for a bit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
R
Verified Purchase
Rodolfo Israel Barranco Rivera
Boise, US
★★★★★ 1
Won't hold charge
Unfortunately the toy would not hold charge. I charged it for couple hours and it wouldn't turn on. I tired a different charger to be safe and still nothing. Was hoping to share this exciting toy with my pup, guess I'll keep looking for alternative.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 20, 2025
A
Verified Purchase
Amazon Customer
West Palm Beach, US
★★★★★ 5
Luxury Dog, Luxury Toy”
“ I previously tried another toy, but its outer layer peeled off easily and even caused issues .This ball, however, is different. Even though my little dog chews on it, the ball recovers easily and causes no damage. It even gives a gentle workout for my pup’s gums and teeth. Maybe because my dog is small, it seems to restore well and is a perfect fit! At first, I saw this advertised mostly for larger dogs. However, even though my pup is really small, they have no trouble playing with it and enjoy it just as much!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
M
Verified Purchase
Maryjcm1
Carnegie, US
★★★★★ 3
Dog loves it; but some poor construction
My small dog instantly loved this toy! I like the squeaker, bounciness, and options for different kinds of movement in the interactive play. It also recharges fast. However, I have two downsides: While my dog isn’t a big chewer, he got through this in a couple weeks. So we are on our second shell. That’s a nice option to be able to order just the shell. Second, both shells have the same issue: they won’t stay screwed shut. The second shell is worse at this than the first. Once unscrewed, the interactive/mechanism piece will fall out and chocks be a choking hazard. It also frustrates my dog and he just barks at it until I fix it. With the new shell I think I had to fix it 5 times in the first 10 minutes of play. Overall, it’s a fun toy and we’ll keep playing on!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 24, 2025
E
Verified Purchase
eloisa mago
Draper, US
★★★★★ 5
Durable
Omg my dog loves this. The rubber is so durable my 2 yo aussie hasnt torn it up yet. I bought a cheap one from temu before and it took only 2 mins for my dog to tear it up it was complete waste of money. I love the football shape becahse it bounces unpredictably. I lile this to exhaust and exercise my aussie. This has become his favorite toy ever. It charges fast too. When im feeling lazy this is good way to exercise my dog and enrich him. I also teach him commands using this ball as his treat or reinforcement. Definitely worth every penny
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 24, 2025

recommand products