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QFS LS Swap Fuel System for 1988-1995 Chevy / GMC Truck & SUV, Complete Performance Fuel System w/ 340LPH Fuel Pump, HFP-FSYS2 QFS

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LS Swap Fuel Pump w/ Fuel Lines, Filter, & AN Fittings for 1988-1999 Chevy/GMC Trucks & SUVs - Automotive Performance, HFP-FSYS2 | QFS

$498.98
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SKU:
HFP-FSYS2-BC
MPN:
HFP-FSYS2
UPC:
840477712835
Availability:
Current Lead Time: 3-5 Days
Weight:
8.00 LBS

  • SIGNIFICANT
    SAVINGS

  • EASY
    INSTALLATION

  • COMPREHENSIVE
    SUPPORT

**Please Note: There is a 3-5 day handling time, as all systems are built to order.**

HFP-FSYS2 is a plug-and-play fuel system designed for LS engine swaps in 1988–1999 Chevy and GMC trucks and SUVs originally equipped with TBI (Throttle Body Injection). Whether you’re installing a 4.8L, 5.3L, or 6.0L LSX engine, this complete fuel system delivers the proper fuel pressure for optimal performance.

Built with high-performance AN fittings and braided fuel lines, this kit is engineered to support everything from basic bolt-on LS builds to high-horsepower forced induction applications. Upgrade your fuel system today for seamless LS swap performance!


Features & Benefits:

  • Supports up to 650+ RWHP
  • Quantum 340LPH Fuel Pump – Delivers consistent, high-pressure fuel flow for LS applications
  • Premium AN Fittings & Braided Fuel Lines – Superior durability, leak-proof performance
  • Direct Replacement for TBI Systems – Eliminates guesswork for LS swaps
  • Fully compatible with modern ethanol-infused pump gasoline up to E85 – ensuring reliable performance with contemporary fuel types

Package Includes:

  • (1) QFS 340LPH E85 Fuel Pump
  • (1) 118 in. Black Nylon Double Braided Stainless E85 Hose w/ -06 Straight Fittings
  • (1) 76 in. Black Nylon Double Braided Stainless E85 Hose w/ -06 Straight Fittings
  • (1) 40 in. Black Nylon Double Braided Stainless E85 Hose w/ -06 Straight Fittings
  • (1) Fuel Filter Mounting Bracket, Black
  • (1) -06 Phenix Select-Flo Fuel Filter, 10 Micron
  • (4) Fuel Rail Fittings
  • (1) Wiring Pigtail
  • (1) Fuel Pump Strainer
  • (1) Flex Hose
  • (1) Tank Seal
  • (1) 6 in. Rubber E85 Hose
  • (1) Rubber Fuel Pump Insulator
  • (2) Hose Clamps


WARNING

This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

**Please Note: There is a 3-5 day handling time, as all systems are built to order.**

HFP-FSYS4 is a streamlined, high-performance fuel line kit for LS and LT engine swaps in 1973–1991 Chevrolet and GMC square body trucks. Designed to support modern fuel injection systems, HFP-FSYS4 includes premium Phenix AN fuel hoses, Quantum billet fittings, and a combined fuel filter/regulator calibrated to 58 PSI—ideal for LS and LT engines.

This kit simplifies your fuel system upgrade without overcomplicating your build. Perfect for budget-conscious or DIY installers, HFP-FSYS4 delivers everything needed to ensure proper fuel pressure and flow, without the added components of a full system like HFP-FSYS5. It’s an ideal match for any pump offered with Quantum’s square body AN fuel pump hangers.

 

Compatible with all 1973–1991 GM square body pickup submodels, including:
C10, C20, C30, K10, K20, K30,
R10, R1500, R20, R2500, R30, R3500,
V10, V20, V30, V3500

Pair with the QFS-H880 fuel pump hanger for a complete and dependable fuel delivery system tailored to your LS swap project.

 

Package Includes:

  • (1) 64 in. Black Nylon Double Braided Stainless E85 Hose w/ -06 Straight Fittings
  • (2) 24 in. Black Nylon Double Braided Stainless E85 Hose w/ -06 Straight Fitting & -06 45° Fitting
  • (1) 58 psi Fuel Pressure Regulator/Filter w/ (1) 5/16 fitting & (2) 3/8 fitting
  • (1) Fuel Rail Fitting
 

PLEASE NOTE:

  • Not suitable for 1990s era LT1.
  • Not recommended for dual pump setups.
  • Not suitable for turbo or supercharged applications, which require vacuum reference.
 

WARNING

This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information go to  www.P65Warnings.ca.gov.

Brand Name:
Quantum
There is a one-year limited warranty on this product. This warranty only applies to the original customer and is non-transferable. Improper use or installation of the product voids this warranty, and Quantum is not responsible for incidental costs resulting from the failure of the product. Please contact our technical support directly prior to making a warranty request.

LS Swap Fuel System with 340LPH Fuel Pump from Quantum Fuel Systems

When building an LS-powered truck or SUV, one of the most important upgrades is the fuel system. A properly designed LS swap fuel system ensures the engine receives consistent fuel pressure and flow under all driving conditions. This complete system from Quantum Fuel Systems includes a high-flow 340LPH fuel pump and supporting components that simplify installation while delivering the performance required for modern LS engines.

Direct Fit LS Swap Fuel System for 1988-1995 Chevy and GMC Trucks

Direct Fit LS Swap Fuel System for 1988-1995 Chevy and GMC Trucks

This LS swap fuel system is engineered specifically for 1988-1995 Chevy and GMC trucks and SUVs. Instead of piecing together multiple components, this kit provides a direct-fit solution designed to simplify LS swap projects. The system integrates easily with factory fuel tanks and supports modern EFI fuel delivery, helping builders complete their LS conversion with fewer modifications and greater confidence.

Consistent Fuel Pressure for LS Engine Performance

Consistent Fuel Pressure for LS Engine Performance

Modern LS engines rely on steady fuel pressure to maintain proper air-fuel ratios and performance. The Quantum Fuel Systems LS swap fuel system includes a high-flow 340LPH fuel pump designed to deliver reliable pressure for electronic fuel injection. Whether the vehicle is used for daily driving, towing, or performance builds, maintaining stable fuel delivery helps ensure smooth acceleration and dependable engine operation.

Ethanol-Resistant Fuel System Components for Modern Fuel Blends

Ethanol-Resistant Fuel System Components for Modern Fuel Blends

Today’s gasoline often contains ethanol, which can accelerate wear in older fuel system components. This LS swap fuel system from Quantum Fuel Systems uses ethanol-resistant materials designed to withstand modern fuel blends. By incorporating durable components built for long-term reliability, the system helps protect the fuel pump and supporting parts while maintaining consistent fuel delivery for LS-powered vehicles.

Complete LS Swap Fuel System Solution from Quantum Fuel Systems

Performing an LS swap often requires upgrades to the original fuel delivery system. This complete LS swap fuel system from Quantum Fuel Systems simplifies the process by providing the essential components needed for proper fuel flow and pressure. Instead of sourcing individual parts, builders can rely on a single engineered system designed to support LS engine conversions.

Engineered for Electronic Fuel Injection Systems

Engineered for Electronic Fuel Injection Systems

Electronic fuel injection systems require higher fuel pressure and precise delivery compared to older carbureted setups. The Quantum Fuel Systems LS swap fuel system is designed to support EFI applications commonly used with LS engines. By delivering consistent fuel flow and pressure, the system helps maintain optimal combustion and reliable performance in swapped trucks and SUVs.

Built for Reliable Operation Under Real Driving Conditions

Built for Reliable Operation Under Real Driving Conditions

Vehicles that receive LS swaps are often used for daily driving, towing, off-road adventures, or performance builds. This LS swap fuel system is designed to perform reliably under those real-world conditions. The high-flow 340LPH fuel pump and durable components provide dependable fuel delivery that supports both stock LS engines and higher-performance configurations.

Backed by Over 20 Years of Quantum Fuel Systems Experience

Backed by Over 20 Years of Quantum Fuel Systems Experience

For more than two decades, Quantum Fuel Systems has manufactured high-quality fuel system components for automotive, powersports, and performance applications. Each LS swap fuel system reflects that experience through precise engineering, reliable materials, and consistent performance. Builders and enthusiasts rely on Quantum Fuel Systems products to deliver dependable fuel delivery for demanding engine builds.

Frequently Asked Questions

A failing fuel pump assembly can cause several noticeable symptoms. Drivers may experience hard starting, hesitation during acceleration, rough idle, or sudden loss of engine power. In severe cases, the engine may stall or fail to start entirely. These symptoms occur when the pump can no longer maintain the fuel pressure required by the engine.

Yes, this LS swap fuel system is designed as a direct-fit solution for 1988-1995 Chevy and GMC trucks and SUVs. The kit is engineered to simplify installation and integrate with factory fuel tank configurations while supporting modern EFI fuel requirements. This approach helps reduce fabrication work during LS engine conversions.

Yes, the components used in this LS swap fuel system are designed to handle modern gasoline blends that contain ethanol. Ethanol-resistant materials help protect internal fuel pump components and maintain long-term durability. This ensures consistent fuel delivery even when vehicles operate on common pump fuels that include ethanol.

Dealership OEM fuel pump assemblies are typically designed only to meet factory specifications. A Quantum Fuel Systems LS swap fuel system is engineered to meet or exceed those standards while also supporting the higher fuel demand of LS engines. It provides a cost-effective and reliable solution for LS swap projects without sacrificing performance.

Yes, Quantum Fuel Systems offers customer support for installation questions and product guidance. Their technical team can help customers confirm compatibility, answer fuel system questions, and provide assistance during installation. This support helps ensure builders and enthusiasts can install their LS swap fuel system with confidence and achieve reliable performance.

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