---
product_id: 15769906
title: "LS HI-FLOW FUEL RAILS - FITS LS1, LS2, LS3, LS6 & L99 FACTORY INTAKES"
brand: "holley efi"
price: "€ 502.28"
currency: EUR
in_stock: true
url: https://www.desertcart.hr/products/15769906-ls-hi-flow-fuel-rails-fits-ls1-ls2-ls3-ls6
store_origin: HR
region: Croatia
---

# 5/8” diameter fuel passage for max flow Machined for -8 (3/4-16) O-ring fittings Black anodized finish with laser-etched EFI logo LS HI-FLOW FUEL RAILS - FITS LS1, LS2, LS3, LS6 & L99 FACTORY INTAKES

**Brand:** holley efi
**Price:** € 502.28
**Availability:** ✅ In Stock

## Summary

> ⚡ Fuel your LS build with precision flow and pro-grade style!

## Quick Answers

- **What is this?** LS HI-FLOW FUEL RAILS - FITS LS1, LS2, LS3, LS6 & L99 FACTORY INTAKES by holley efi
- **How much does it cost?** € 502.28 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/15769906-ls-hi-flow-fuel-rails-fits-ls1-ls2-ls3-ls6)

## Best For

- holley efi enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Legacy:** Backed by Holley EFI’s century-long dominance in performance fuel systems, powering champions on track.
- • **Universal Fitment:** Compatible with LS1, LS2, LS3, LS6 & L99 factory intakes for seamless upgrades.
- • **Race-Ready Fuel Flow:** 5/8” diameter rails engineered to support high horsepower builds without compromise.
- • **Sleek & Durable Finish:** Black anodized coating with precision laser-etched EFI branding ensures lasting style under the hood.
- • **Plug-and-Play Installation:** Includes four -6 to 3/4-16 O-ring adapters for hassle-free setup with your existing fuel system.

## Overview

Holley EFI’s LS Hi-Flow Fuel Rails deliver optimized 5/8” fuel passage for high horsepower LS engines, finished in durable black anodized coating with laser-etched EFI logo. Designed for LS1, LS2, LS3, LS6, and L99 factory intakes, these rails come ready with -8 O-ring fittings and adapters, ensuring a seamless, race-proven upgrade trusted by motorsport champions.

## Description

LS HI-FLOW FUEL RAILS - FITS LS1, LS2, LS3, LS6 & L99 FACTORY INTAKES

## Features

- Bright dip, black anodized finish with laser etched EFI logo for long lasting good looks
- 5/8” diameter fuel passage provides the flow capacity for high horsepower applications
- Fuel rails are machined to accept -8 (3/4-16) O-ring fittings
- Includes (4) -6 to 3/4-16 O-ring adapters

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Plastic |
| Brand | Holley EFI |
| Inlet Connection Size | 0.5 Inches |
| Inlet Connection Type | 3/4-16 UN female thread |
| Outlet Connection Type | SAE |
| Number of Ports | 2 |
| Outlet Connection Size | 0.5 Inches |
| Specification Met | certified frustration-free |
| Global Trade Identification Number | 00090127680582 |
| Manufacturer | Holley EFI |
| UPC | 090127680582 |
| Model | Holley EFI 534-209 LS Hi-Flow Fuel Rails - Fits LS1, LS2, LS3, LS6 & L99 factory intakes |
| Item Weight | 3.52 pounds |
| Item model number | 534-209 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 534-209 |
| OEM Part Number | 534-209 |

## Product Details

- **Material:** Plastic
- **Brand:** Holley EFI
- **Inlet Connection Size:** 0.5 Inches
- **Inlet Connection Type:** 3/4-16 UN female thread
- **Outlet Connection Type:** SAE
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.5 Inches
- **Specification Met:** certified frustration-free
- **Global Trade Identification Number:** 00090127680582
- **Manufacturer:** Holley EFI

## Images

![LS HI-FLOW FUEL RAILS - FITS LS1, LS2, LS3, LS6 & L99 FACTORY INTAKES - Image 1](https://m.media-amazon.com/images/I/717gPsctFyL.jpg)

## Frequently Bought Together

- LS HI-FLOW FUEL RAILS - FITS LS1, LS2, LS3, LS6 & L99 FACTORY INTAKES
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**Shop now:** [https://www.desertcart.hr/products/15769906-ls-hi-flow-fuel-rails-fits-ls1-ls2-ls3-ls6](https://www.desertcart.hr/products/15769906-ls-hi-flow-fuel-rails-fits-ls1-ls2-ls3-ls6)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-03*