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

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

$333.45 $370.50
Save 10%
No.2 Bestseller on communitymontessori.net >

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 1807 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
G
Verified Purchase
GeorgiaPeach
Lowell, US
★★★★★ 4
Super soft, looks and feels lovely
Color: Cream (Double-sided Faux Fur Bubble), Size: Throw (50" x 60")
LThis is a double sided faux fur blanket (with sides have the same slightly bubbled fur. It iz slightly bubbled looking, not as bubbly as the picture makes it seem. The two sides are sealed around the edge, but not sewn or tied in anyway throughout the blanket, so the two sides are free to move on theinside of the. Blanket. It is extremely soft, and my dog, who is old and going blind actively seeks out this particular blanket to make his nest in. He loves it, and so do I. I got it discounted in white, a d know at some point it won't look white any.ore. I'll try to die it after it gets a little grungy looking. Till then, it looks and feels luxurious. I only wish it were joined together in the middle, and more "bubbly" looking. It's a bit heavy by itself for summer nights, but feels warm down cozy in colder times. I got the throw size, it seems a bit smaller than I expected it to be.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 19, 2025
R
Verified Purchase
Robin Skidmore
Alexandria, US
★★★★★ 5
Amazingly soft supple sublime
Color: Cream (Double-sided Faux Fur Bubble), Size: Throw (50" x 60"), Color: Cream (Double-sided Faux Fur Bubble), Size: Throw (50" x 60")
AmazingSoft, but they can be heavy, so I love them.They may not be! I bought four .Queen , tqo kings and several T hrows for the elders absolutely love them all only for winter
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
T
Verified Purchase
ThymeToFly
Whiting, US
★★★★★ 5
Warm and cuddly!
Color: Cream (Double-sided Faux Fur Bubble), Size: Throw (50" x 60")
I love this double sided blanket!! It is sooo soft and warm. I got the creme color. I don’t understand the reviewers that say that it is hard to fold or that it slips against itself. Mine has two edges/seams that are sewn well and it’s simple to fold after use. I just look for the tag which is on one seam and fold from there. Great buy too!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2026
A
Verified Purchase
Amanda Approved
Los Angeles, US
★★★★★ 5
Super soft, cozy, and a beautiful addition to the bed
Color: Khaki, Size: Queen(90×90in)
This blanket is absolutely beautiful and feels just as good as it looks. It’s incredibly soft to the touch and has that warm, cozy feel that makes you want to curl up right away. The texture adds a nice touch without being too heavy, and it lays really nicely on the bed. My daughter immediately claimed it for her room and has been loving it ever since—it’s quickly become her go-to blanket. It also seems very well made and holds its shape nicely after use. Overall, a great mix of comfort and style.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
R
Verified Purchase
Ronda S
Cuba, US
★★★★★ 5
So SOFT, Quality, WARM Beautiful Throw!
Color: Sage Green, Size: King(108×90in), Color: Sage Green, Size: King(108×90in)
AGANEAR COZY!!! WARM, lightweight king size throw. Beautiful color of sage green, my favorite, color is the perfect shade!! King size is 108x90 it is huge, soft, plush, cuddle up watch tv, read a book with hot chocolate Fall Time!! Totally Happy with this purchase! It can be used anywhere or anytime, get a king and there is lots of room to share. The blanket has a diamond floral pattern on one side, the other is a plain soft, plush fabric. Machine wash on cold. I am told by my Daughter who has one, it washes well and is a very durable blanket. Always great to have a real known person give you great feedback before you buy. Great value and purchase!! Happy Fall and Cuddling up in a nice blanket!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 23, 2025

recommand products

Lenox Tools 145490081616 1"X18" Bi-Metal Ship Auger Bit
89.78
StopTech Replacement Front Left 380x35mm Aero Rotor - 30.874.1113
127.50
Lenox Tools 1772425 11/16" Bi-Metal Speed Slot Arbored Hole Saw
25.79
GReddy M18 Warning Oil Temp Sensor Fitting - 16400720
12.82
Lenox Tools 1766356 11"X3/4" Diamond Grit Cast Iron Recip 1 Pk
45.01