Holley Universal EFI Boost Reference Regulator (HO512-504-5)
SKU: 64465387095

Holley Universal EFI Boost Reference Regulator (HO512-504-5)

$333.45 $370.50
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14

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Description

Holley Universal EFI Boost Reference Regulator (HO512-504-5)HO512 504 5 HOLLEY 1: 1 BOOST COMPENSATING Part Number: HO512 504 5 This precision adjustable fuel metering regulator is the ultimate fuel pressure control unit designed to work on all naturally aspirated EFI, turbo and supercharged applications like vehicles that run in the Pro Street, Pro Import and Outlaw classes. This is a 2 port 1: 1 boost compensating return style regulator that is adjustable from 15 65 PSI + boost reference and is designed to

HO512-504-5 - HOLLEY 1:1 BOOST COMPENSATING

Part Number: HO512-504-5

This precision adjustable fuel metering regulator is the ultimate fuel pressure control unit designed to work on all naturally aspirated EFI, turbo and supercharged applications like vehicles that run in the Pro Street, Pro Import and Outlaw classes. This is a 2 port 1:1 boost compensating return style regulator that is adjustable from 15-65 PSI + boost reference and is designed to be used in conjunction with any electric EFI fuel pump. Features built in gauge port, mounting bracket, two AN -8 O-ring Fittings and a AN-6 O-ring return fitting. All racing Regulators come Black hard anodised for ultimate durability.
Features:

Allows Adjustment from 15-65 PSI + Boost Reference
Bolts In Stock Location
Easy Installation
Designed to regulate high fuel demands for naturally aspirated EFI, turbo, supercharged and NOS race applications
Engineered to regulate extreme flow volumes generated by racing fuel systems
-8AN & -6AN O-Ring style fittings included to adapt to steel braided fuel lines
CNC Machined Billet Aluminium

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: 64465387095

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4.5 ★★★★★
Based on 799 reviews
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Verified Purchase
Richard
Los Angeles, US
★★★★★ 4
It's a good working mouse but it's loud clicking and a little small.
Color: Swift Grey, Size: 1 Pack, Style: USB Receiver
I thought I was getting a quite clicking mouse but this is not it. I may have misunderstood the description or confused this mouse with another while researching. It's not a five star for me because it clicks loud and it's small and too easy to accidentally click one of the buttons when you don't want it clicked. The accidental clicking happened a lot and was becoming frustrating. As a working mouse, it does its job and it's reliable. Overall, I like the appearance of it and it feels nice and grips good. I think the price is reasonable for this product. I ended up getting a quite mouse to replace this one, but I am keeping it as a backup.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
D
Verified Purchase
David
Houston, US
★★★★★ 5
Very Fast
Color: Red, Size: 1 Pack, Style: USB Receiver
The Logitech M185 Wireless Mouse was exactly what I needed. This mouse works great and included a battery to get you started. No problems using it with my HP EliteBook laptop. I have to say, I was impressed with how fast I got the product. I don't think I could have driven to the store and back any faster. The service and price were worth it. Thanks again Amazon.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
T
Verified Purchase
TrulyAPositive
Massapequa, US
★★★★★ 5
Great Computer Mouse
Color: Swift Grey, Size: 1 Pack, Style: USB Receiver
This is a great mouse! Just delivered and setup and used. Setup was a breeze and it worked immediately and it flows so smoothly on my mouse pad. So pleased with this well priced product. No need to hesitate purchasing this computer mouse. You won't be sorry. Thank you Logitech and Amazon Prime!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026
H
Verified Purchase
Hank
Charlottesville, US
★★★★★ 5
Logitech M185 Wireless Mouse
Color: Black, Size: 1 Pack, Style: USB Receiver
Good mouse, works well. Nice small comfortable size. I always buy Logitech if I need to replace a mouse.
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Reviewed in the United States on May 3, 2026
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Verified Purchase
WeLoveNae
Pawtucket, US
★★★★★ 5
Easy and sleek!
Size: 10 Inch, Color: Gold
I love the shelves! The gold finish pops on my white shelves. Easy to install, I was off by a half inch on the wood shelves I was using for the brackets but I was able to flip the brackets and use the underside to hold my shelves.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2024

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