SKU: 85966301440

Boost Compensating Universal EFI Fuel Pressure Regulator - 512-504-5

Sale price$202.47 Regular price$224.97
Save 10%

Pay in installments of $56.24 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 25 - Jul 30

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Boost Compensating Universal EFI Fuel Pressure Regulator - 512-504-5Overview: 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.

Overview:

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. Black anodized.

Features:

  • Black anodized
  • Easy installation
  • -8an & -6an o-ring style fittings included to adapt to steel braided fuel lines
  • 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
  • CNC machined billet aluminum
  • Allows adjustment from 15-65 psi + boost reference

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Brand Holley
Color Hard Coat Anodized
Emission Code 4
Fuel System Gasoline
Fuel Type Gasoline
Inlet Size 8 AN O-Ring
Material Aluminum
Outlet Size 8 AN O-Ring
Pressure Range 15-65 PSI
Product Type Fuel Pressure Regulator
Return Size 6 AN O-Ring
Style Bypass
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: 85966301440

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 18 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Melissa D Chaney
Bozeman, US
★★★★★ 5
Fits my Eufy
Size: 11SMax-24Pack
Parts fit my Eufy like they should. The side brush has held up nicely.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
C
Verified Purchase
Clyde
Battle Creek, US
★★★★★ 5
Bang for buck
Size: 11SMax-24Pack
You get a lot for the price. And it fits. Recommended. It is a little noisier than the original bit functions are the same
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 10, 2026
M
Verified Purchase
Martini81
Whiting, US
★★★★★ 5
Perfect Fit & Performance
Style: with Pre-Filter
These are an excellent, cost-effective alternative to OEM parts. The brushes and filters fit securely, restore full suction power, and hold up well to daily use. A must-have for maintaining a Eufy RoboVac without the high brand-name price tag.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
R
Verified Purchase
raj
Lowell, US
★★★★★ 5
Fits well
Style: with Pre-Filter
Good product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
E
Verified Purchase
Erin Mckenzie
New York, US
★★★★★ 5
Works great!
Style: with Pre-Filter
I bought this set to put on my original euphy robot vacuum. It works perfect! All pieces fit perfectly and were so easy to change out. I’ve had the new parts installed for a few weeks and it works so much better now. I recommend them for sure if you need any new parts for yours!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026

recommand products