The LS engine family remains a popular choice for swaps and EFI conversions, thanks to its strong performance, availability, and aftermarket support. This article highlights five carefully selected fuel system components that optimize LS swaps, improve fuel delivery, and protect engine life. Each section describes how the product works, key specifications, and practical considerations for installation. Compare options side by side and use the buying guide to balance performance, reliability, and compatibility for your build.
| Product | Brand | Focus | Key Benefit |
|---|---|---|---|
| EVIL ENERGY 6AN Fuel Line Kit | EVIL ENERGY | Fuel line kit with LS swap regulator | 58 PSI output with built-in 10-micron filter |
| GSL392 Inline Fuel Pump & Regulator | Yinlowa | 58 PSI regulator + inline pump | High-pressure capability for modern EFI |
| 58 PSI LS Swap Fuel Filter Regulator & 25FT Hose | YEHERIT | Full kit with hose | Complete LS-friendly fuel delivery |
| Htostar Racing LS Swap Kit | Htostar Racing | PTFE hose + regulator | Extreme temperature and pressure tolerance |
| EVIL ENERGY 58 PSI Regulator Kit | EVIL ENERGY | LS swap regulator pack | Integrated bypass regulator |
EVIL ENERGY 6AN Fuel Line Kit with LS Swap Regulator
The EVIL ENERGY 6AN Fuel Line Kit provides a versatile solution for LS swaps and EFI conversions. Built for 6AN braided fuel hose, it supports gasoline and other fuels with a maximum working pressure around 750 psi and a bursting pressure of 2250 psi. The kit includes a built-in 10 micron fuel filter element and a regulator that maintains an output pressure of 58 psi, helping ensure clean fuel delivery while protecting injectors and the engine over time. This kit is suitable for LS-based engines and EFI conversions that require robust fuel routing and filtration.
GSL392 Inline Fuel Pump & 58 PSI Regulator
The GSL392 package centers on a 58 PSI regulator with an inline high-pressure fuel pump, designed to meet demanding EFI needs. It includes a 10 micron fuel filter to ensure contaminant-free fuel delivery, helping protect injectors and maintain steady performance. With compatibility across LS-based engines and LS swap EFI installations, this kit is well-suited for turbo and naturally aspirated setups that demand reliable fuel pressure and flow at higher revs.
58 PSI LS Swap Fuel Filter Regulator with 25FT Hose
This YEHERIT kit is designed around a steady 58 PSI fuel pressure suitable for LS swaps, combining a durable stainless steel regulator with a 25-foot 6AN EFI hose and 6AN fittings. The regulator includes a 10-micron filter to keep particulates from entering the fuel system, reducing injector wear and protecting engine performance. The full kit approach provides everything needed for a clean, efficient fuel system upgrade.
Htostar Racing LS Swap EFI Kit with PTFE Hose
The Htostar Racing kit emphasizes PTFE fuel line reliability, offering a hose rated for extreme temperatures and pressures up to 3000 psi with a 12mm outer diameter and 8mm inner diameter. This kit is built for EFI LS systems, LS engine swaps, and demanding applications where heat, fuel volatility, and pressure are critical. The included regulator ensures a constant 58 psi output, contributing to consistent fuel delivery across RPM ranges.
EVIL ENERGY 58 PSI Fuel Filter Regulator for LS Swap
This EVIL ENERGY regulator is designed for LS-based engines from 1999 to 2014, delivering a stable 58 PSI with a built-in 10-micron filter to protect fuel injectors. It supports gasoline, diesel, and alternative fuels, making it a flexible option for diverse EFI setups. The regulator’s bypass feature helps manage fuel flow, reducing potential stalling or lean conditions during throttle transitions.
EVIL ENERGY LS Swap Fuel Filter Regulator with 6AN PTFE Hose Kit
This EVIL ENERGY kit focuses on PTFE-lined, nylon braided fuel hose paired with a 58 PSI regulator designed for LS swap EFI systems. The PTFE hose offers excellent heat resistance and chemical compatibility, reducing the risk of swelling or degradation under high-temperature operation. The combined regulator and hose solution is suitable for LS-based engines using gasoline, diesel, or E85 with proper calibration.
Medoon 6AN PTFE Fuel Line Kit
The Medoon kit couples a 26-foot AN6 PTFE fuel line with multiple fittings and adapters for LS-based EFI systems. PTFE hose stands up to high temperatures and fuels, with a maximum working pressure around 3000 psi and bursting pressure near 10,000 psi. The kit is versatile for EFI LS builds, turbo lines, and related fuel-delivery needs, offering robust performance where heat and pressure are concerns.
Buying Guide: Key Considerations for LS Fuel Injection Upgrades
- Engine compatibility: Verify that the kit is designed for LS-based engines and matches your vehicle’s year range and fuel type. Some regulators specify compatibility with certain LS blocks and EFI configurations.
- Pressure and flow: Most LS swap setups target around 58 psi fuel pressure at the rail. Ensure the regulator maintains stable pressure under load and that the inline pump can sustain required flow at your engine’s horsepower goals.
- Filtration: A 10-micron filter element helps protect injectors and the engine from particulates. Consider whether the kit includes a filter regulator or if you’ll need a separate filter assembly.
- Hose type and durability: PTFE hoses offer excellent heat resistance and chemical compatibility, but may come at a higher cost. Nylon braided hoses are typically more affordable and adequate for many builds, with appropriate temperature ratings and pressure allowances.
- Temperature range: EFI fuel systems can see extreme heat in engine bays. Choose hoses and regulators rated for the full temperature spectrum your environment may encounter, especially in hot climates or under forced induction.
- Installation footprint: Some kits provide a complete package (hose, fittings, regulator, and pump), while others focus on a regulator-only solution. Assess whether you need a full kit or modular components to fit your existing plumbing.
- Fuel compatibility: Not all components tolerate ethanol blends (like E85). If you plan to run E85 or other fuel blends, verify materials compatibility across hoses, seals, and regulators.
- Maintenance and replacement parts: Look for components with readily available replacement filters and fittings, as well as a straightforward replacement process to minimize downtime during maintenance.
- Noise and reliability: Inline pumps can introduce electrical noise and potential vibration. Choose brands with stable electrical specs and reliable housings to minimize troubleshooting later.
- Warranty and support: Prefer products with clear warranty terms and accessible customer support to resolve compatibility questions during installation.
When planning an LS fuel system upgrade, assembling a coherent kit that includes high-quality hoses, a pressure regulator, and a dependable pump can simplify installation and improve reliability. Consider your vehicle’s fuel economy goals, the presence of forced induction, and the level of tweak you plan to apply to your fuel map. A well-matched combo reduces injector wear, maintains consistent rail pressure, and protects engine life over the long term.