---
product_id: 495149039
title: "Holley Bypass Regulator, Fuel Pressure 6.0 Psi, Chrome"
brand: "holley"
price: "$U278"
currency: UYU
in_stock: false
url: https://www.desertcart.uy/products/495149039-holley-bypass-regulator-fuel-pressure-6-0-psi-chrome
store_origin: UY
region: Uruguay
---

# Precise 6.0 PSI fuel pressure regulation 3/8” NPT ports for seamless vehicle-specific fit Die-cast aluminum build for ultimate durability Holley Bypass Regulator, Fuel Pressure 6.0 Psi, Chrome

**Brand:** holley
**Price:** $U278
**Availability:** ❌ Out of Stock

## Summary

> ⛽️ Regulate your ride with precision and style — don’t get left behind!

## Quick Answers

- **What is this?** Holley Bypass Regulator, Fuel Pressure 6.0 Psi, Chrome by holley
- **How much does it cost?** $U278 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/495149039-holley-bypass-regulator-fuel-pressure-6-0-psi-chrome)

## Best For

- holley enthusiasts

## Why This Product

- Trusted holley brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Boost-Ready Design:** Includes 1/8” NPT boost reference port for 1:1 boost response
- • **Sleek Chrome Finish:** Machined exterior adds a premium, polished look under the hood
- • **Rugged Die-Cast Aluminum:** Engineered for long-lasting performance and corrosion resistance
- • **Vehicle-Specific Fitment:** 3/8” NPT inlet, outlet, and return ports ensure perfect compatibility
- • **Precision Fuel Pressure Control:** Maintains a steady 6.0 PSI for optimal engine efficiency

## Overview

The Holley Bypass Regulator delivers reliable 6.0 PSI fuel pressure control with durable die-cast aluminum construction and vehicle-specific 3/8” NPT ports. Featuring a boost reference port and a sleek chrome finish, it’s engineered for performance and longevity in any high-demand fuel system.

## Description

Holley does it again with their new die cast aluminum by pass style fuel pressure regulators. The same Holley quality that you expect at a price point that every budget can handle. 1/8" NPT barb fitting for boost reference port included.

## Features

- Die Cast aluminum construction
- 3/8” NPT Inlet, Outlet, and Return ports
- 1/8” NPT Gauge Port
- 1/8" NPT Boost Reference – 1:1
- Durable and long lasting.Fit type: Vehicle Specific

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Holley |
| Brand | Holley |
| Model | Holley Bypass Regulator, Fuel Pressure 6.0 Psi |
| Item model number | HOL 12-881 |
| Exterior | Machined |
| Manufacturer Part Number | HOL 12-881 |
| OEM Part Number | 12-881 |
| Item Weight | 227 g |

## Images

![Holley Bypass Regulator, Fuel Pressure 6.0 Psi, Chrome - Image 1](https://m.media-amazon.com/images/I/61NKcuG3R6L.jpg)

## Questions & Answers

**Q: May I run this without a return line to the fuel tank?**
A: Yes but you would have to plug the return outlet. Make sure to use fuel friendly thread sealer. Or you can buy the Holley 12-803 regulator that comes without a return line and is a cheaper option than this. Cheers

**Q: What is the maximum flow rate through this unit?**
A: 6 psi is the highest. I’ve got mine set at 2.7 psi as it’s used on an old Ford Flathead engine and Carb.

**Q: why cant i get shipped to me in calif**
A: Emissions?

**Q: Does it come with instructions**
A: Yes, the Holley Bypass Regulator, Fuel Pressure 6.0 Psi, Chrome comes with instructions. The instructions are available in the product packaging or can be downloaded from the Holley website. The instructions include information on how to install the regulator, adjust the pressure, and troubleshoot any problems.

## Frequently Bought Together

- Holley Bypass Regulator, Fuel Pressure 6.0 Psi, Chrome
- MEASUREMAN 1.5" Black Dial, 304 Stainless Steel case, Liquid Filled Fuel Pressure Gauge, 0-15Psi, 3-2-3%, 1/8" NPT Center Back Mount
- Moroso- 65380 FITTING,FUEL HOSE

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**Shop now:** [https://www.desertcart.uy/products/495149039-holley-bypass-regulator-fuel-pressure-6-0-psi-chrome](https://www.desertcart.uy/products/495149039-holley-bypass-regulator-fuel-pressure-6-0-psi-chrome)

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-02-20*