---
product_id: 15769906
title: "LS HI-FLOW FUEL RAILS - FITS LS1, LS2, LS3, LS6 & L99 FACTORY INTAKES"
brand: "holley efi"
price: "¥78744"
currency: JPY
in_stock: true
reviews_count: 9
category: "Holley Efi"
url: https://www.desertcart.jp/products/15769906-ls-hi-flow-fuel-rails-fits-ls1-ls2-ls3-ls6
store_origin: JP
region: Japan
---

# 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:** ¥78744
**Availability:** ✅ In Stock

## Summary

> 🛠️ Fuel your LS build with race-ready flow and 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?** ¥78744 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/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

- • **Precision Fitment:** Designed to seamlessly fit LS1, LS2, LS3, LS6 & L99 factory intakes for effortless installation.
- • **Race-Proven Heritage:** Backed by Holley’s century-long legacy powering NASCAR and NHRA champions—performance you can trust.
- • **Sleek, Durable Finish:** Black anodized coating with precision laser-etched EFI branding ensures lasting style and corrosion resistance.
- • **Unrivaled Fuel Flow Capacity:** 5/8” diameter rails engineered to support high horsepower builds without compromise.
- • **Versatile Adapter Kit Included:** Comes with four -6 to 3/4-16 O-ring adapters for flexible fuel system setups.

## Overview

Holley’s LS Hi-Flow Fuel Rails deliver superior 5/8” fuel passage diameter for high horsepower LS engines, finished in durable black anodized coating with laser-etched EFI branding. Compatible with LS1, LS2, LS3, LS6, and L99 factory intakes, these rails include -8 O-ring fitting compatibility and adapters, combining precision engineering with a legacy of motorsport dominance.

## Description

Holley products have been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR Sprint Cup team and every NHRA Pro-Stock champion for four decades. Holley's products include performance fuel pumps, fuel injection, intake manifolds and engine dress-up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies, Hooker Headers, Flowtech Headers, NOS, Weiand, or Earl's, Holley products can give you the edge you need over the competition.

Review: Nice rails. - Nice rails. Made them work on my TBSS intake with tall injectors but wasn't easy by any means. Lots of starting and seeing tons of leaks then making new brackets again. These rails are very nice tho. Come box perfect from holly and detailed instructions with multiple diagrams of how you can plum fuel to them.
Review: Slick beauty flows like a champ. - Yes! direct bolt on fitment to the FAST LSXR intake. Fuel injectors will need the thicker O-ring. These flow well and have a nice black paint for my blacked out 6.0 Liter. My boosted lq4 is pushing 900hp

## 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 |
|---------------|-------|
| ASIN | B007V3WEOE |
| Best Sellers Rank | #992,140 in Automotive ( See Top 100 in Automotive ) #2,057 in Automotive Replacement Fuel System Fittings |
| Brand | Holley EFI |
| Customer Reviews | 4.2 4.2 out of 5 stars (36) |
| Date First Available | April 17, 2012 |
| Exterior Finish | black anodized |
| Global Trade Identification Number | 00090127680582 |
| Inlet Connection Size | 0.5 Inches |
| Inlet Connection Type | 3/4-16 UN female thread |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.52 pounds |
| Item model number | 534-209 |
| Manufacturer | Holley EFI |
| Manufacturer Part Number | 534-209 |
| Material | Plastic |
| Model | Holley EFI 534-209 LS Hi-Flow Fuel Rails - Fits LS1, LS2, LS3, LS6 & L99 factory intakes |
| Number of Ports | 2 |
| OEM Part Number | 534-209 |
| Outlet Connection Size | 0.5 Inches |
| Outlet Connection Type | SAE |
| Specification Met | certified frustration-free |
| UPC | 090127680582 |

## Product Details

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

## 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)
![LS HI-FLOW FUEL RAILS - FITS LS1, LS2, LS3, LS6 & L99 FACTORY INTAKES - Image 2](https://m.media-amazon.com/images/I/81R9BcpKgPL.jpg)
![LS HI-FLOW FUEL RAILS - FITS LS1, LS2, LS3, LS6 & L99 FACTORY INTAKES - Image 3](https://m.media-amazon.com/images/I/61BKKo97VDL.jpg)
![LS HI-FLOW FUEL RAILS - FITS LS1, LS2, LS3, LS6 & L99 FACTORY INTAKES - Image 4](https://m.media-amazon.com/images/I/710N+jSbwLL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice rails.
*by D***S on August 16, 2020*

Nice rails. Made them work on my TBSS intake with tall injectors but wasn't easy by any means. Lots of starting and seeing tons of leaks then making new brackets again. These rails are very nice tho. Come box perfect from holly and detailed instructions with multiple diagrams of how you can plum fuel to them.

### ⭐⭐⭐⭐⭐ Slick beauty flows like a champ.
*by R***6 on June 25, 2022*

Yes! direct bolt on fitment to the FAST LSXR intake. Fuel injectors will need the thicker O-ring. These flow well and have a nice black paint for my blacked out 6.0 Liter. My boosted lq4 is pushing 900hp

### ⭐⭐⭐⭐ Better than the knock off fuel rails some companies offer
*by F***O on February 7, 2024*

Had to bend the brackets and elongate the holes a bit to make it fit on my ls1 style intake but other than that the product works great and way better than the knock off fuel rails that leak from the injector holes

## Frequently Bought Together

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-17*