When upgrading or swapping an LS-based engine, a reliable fuel pump and regulator kit is essential for consistent delivery and performance. The following selections cover inline and in-tank solutions, high-flow needs, and compatibility with common LS EFI setups. Each option meets typical LS swap requirements, from 58 PSI regulation to 255 LPH flow, ensuring stable pressure, clean fuel delivery, and compatibility with turbo or supercharged builds.
| Product | Brand | Key Benefit | PSI / Flow | Type |
|---|---|---|---|---|
| GSL392 Inline Fuel Pump & 58 PSI Regulator Kit | Yinlowa | 58 PSI regulator with 10-micron filter | 58 PSI, 255 LPH | Inline |
| Aeromotive 11540 340 Series | Aeromotive | High-performance intank option | 340+ LPH @ 40 PSI | Intank |
| OSIAS In-Tank Fuel Pump for GM All Models | OSIAS | Drop-in LS/TBI compatibility | 58 PSI, 160-164 LPH | In-tank |
| Dasbecan GSL392 Inline Kit | Dasbecan | Replaces GSL392-400-939 with fittings | 58 PSI, 255 LPH | Inline |
| EVIL ENERGY 58PSI + 300LPH Kit | EVIL ENERGY | PTFE hose, 10-micron filter | 58 PSI, 300 LPH | Inline |
GSL392 Inline Fuel Pump & 58 PSI Regulator Kit
The GSL392 inline pump from Yinlowa is designed to meet LS-based EFI needs with a 58 PSI regulator and a 10-micron fuel filter. It provides a practical balance between pressure stability and flow for most LS swap configurations. The kit includes 6AN fittings to support LS swap EFI conversion and ensure dependable performance across turbo and naturally aspirated builds. The pump is rated around 255 LPH and draws roughly 20 amps, making it suitable for standard high-performance applications without overpowering existing electrical systems.
Key considerations include compatibility with 1999–2014 LS engines in several displacements and the ability to return unused fuel to the tank. In addition to the 58 PSI fuel pressure, the integrated filter plays an essential role in filtration, protecting injectors and the fuel rail from contaminants. Users should confirm pump voltage compatibility with their vehicle’s electrical system and ensure appropriate mounting provisions within the engine bay or hanger.
Aeromotive 11540 340 Series Stealth Intank Pump
Aeromotive’s 11540 340 Series delivers high performance from an in-tank configuration, exceeding standard flow rates by more than 30%—over 340 LPH at 40 PSI. This design supports high-horsepower and forced-induction builds while preserving compact dimensions suitable for many hanger assemblies. It is a universal fit for EFI and carbureted systems, making it a versatile upgrade for LS swaps that demand elevated fuel delivery without extensive modification. The Stealth design also helps minimize noise and heat transfer to surrounding fuel lines.
When selecting this pump, consider the vehicle’s overall fuel system layout, including line sizing, regulator compatibility, and return vs. returnless configurations. Ensure the mounting provisions align with your existing hanger or seek compatible aftermarket hangers. Power consumption is a factor in long-term reliability, so gauge the electrical wiring and fuse sizing accordingly to support sustained high-flow operation.
OSIAS In-Tank Fuel Pump Kit For GM All Models
OSIAS offers an in-tank solution designed for LS and LT swaps, including a 58 PSI regulator, a 58 PSI pressure setup, and a 160–164 LPH flow range. The kit is aimed at LM7, LR4, LQ4, LQ9, LS1, LS2, LS6, and similar GM variants, providing a drop-in replacement for OE EP381-style pump hangers. It features a 14-gauge wiring harness for straightforward installation and a sealed tank assembly that minimizes fuel vapor leakage. This option is especially appealing for those seeking a reliable, all-in-one package with tank sealing components and strainer included.
Potential considerations include ensuring compatibility with your vehicle’s stock wiring and the availability of a matching hanger kit if the stock one is not retained. The regulator helps maintain steady pressure, which is critical for precise injector control and overall engine performance in swap scenarios.
Dasbecan GSL392 Inline Kit for LS Swap
Dasbecan presents a kit intended to replace GSL392-400-939 with a complete inline pump and regulator setup, including necessary 6AN fittings and mounting hardware. The system runs at 58 PSI with a 255 LPH output, aligning well with typical LS-based EFI requirements and high-performance builds that demand stable pressure and reliable fuel flow. It is designed to fit most EFI configurations including turbocharged and supercharged setups, making it a versatile choice for various LS swap projects.
When considering this kit, verify compatibility with your engine bay space, wiring capacity, and fuel rail/regulator compatibility. The inclusion of multiple fittings helps to simplify installation, but ensure you have the right adapters for your fuel lines and return strategy. Check the pump’s amperage and assess whether your vehicle’s electrical system can sustain extended high-load operation.
EVIL ENERGY 58PSI Regulator Kit with 300LPH Pump
EVIL ENERGY combines a 58 PSI regulator with a 300 LPH inline pump and a 60MM bracket/clamp kit. The package includes a 6AN PTFE nylon braided hose, designed for EFI LS systems and conversions. The regulator’s built-in 10-micron filter contributes to fuel cleanliness, while operating pressure up to 75 PSI supports high-performance configurations. This kit is suitable for a broad range of fuels, including E85, and is ideal for LS swaps that require reliable regulator performance plus a robust flow rate.
Users should confirm the hose material compatibility with their fuel type and verify that the regulator’s pressure matching aligns with their fuel rail and injectors. The PTFE hose offers excellent chemical resistance, but ensure proper routing to minimize heat and vibration effects on long drives or track usage.
KEMSO 340LPH High Performance Fuel Pump
KEMSO’s 340LPH pump targets high-performance LS swaps, with compatibility announced for up to 600 HP in N/A, turbocharged, and supercharged setups. The brand emphasizes USA-based support and a design suitable for gasoline or E85. While the listing focuses on high horsepower potential, it remains adaptable to a wide range of LS swap configurations where robust fuel delivery is a priority. It represents a practical option for enthusiasts building performance-oriented EFI systems and seeking motorist-friendly support networks.
Important considerations include horsepower goals, the pump’s electrical requirements, and whether the existing wiring harness can sustain sustained high-current draw. For turbo or supercharged builds, ensure regulator compatibility and adequate fuel line sizing to prevent pressure drop or heat-related issues under load.
Yezoauto 255LPH Inline LS Swap Pump Kit
Yezoauto provides a 255 LPH inline LS swap high-pressure pump with a 58 PSI regulator and a 6AN fitting plus a 58 PSI EFI conversion fuel filter regulator kit. The listing notes interchangeability with standard Walbro GSL392 components and emphasizes the kit’s role in delivering clean, pressurized fuel to the injectors. It is a practical choice for retrofits and swaps requiring reliable fuel pressure at moderate flow rates, particularly in engines with moderate boost levels or EFI setups that require a compact, efficient inline solution.
When selecting this kit, verify the matching Walbro or GSL392 era components to ensure compatibility with your fuel hanger hardware and return line strategy. Consider the total fuel system impedance, including line diameters, regulator type, and potential heat buildup during edge-case driving conditions or track use.
Buying Guide: Key Purchase Considerations
- Fuel system topology: Inline pumps are common for return-style systems, while in-tank pumps fit many factory LS hangers. Choose based on your vehicle’s fuel tank setup and regulator configuration.
- Pressure and flow needs: LS swaps with turbo or hyper-responsive EFI typically demand higher flow (200+ LPH) and stable 58 PSI or higher regulator pressure. Ensure the regulator, pump, and lines are sized appropriately to prevent fuel starvation under load.
- Regulator features: Built-in filters (10-micron or similar) help protect injectors. Consider regulator material and compatibility with E85 or race fuels if your build uses alternative fuels.
- Electrical load: High-flow pumps draw more current. Confirm that wiring, fuses, and alternator capacity can support sustained operation without overheating or voltage drop.
- Compatibility: Verify engine family, model year, and EFI system specifics (returnless vs return). Many options list LS, LT, or GM-compatible configurations; ensure you match your engine and harness.
- Installation considerations: Some kits include wiring harnesses, mounting hardware, and bulkhead connectors. Confirm included hardware aligns with your vehicle’s existing components or plan for adapters.
- Durability and heat management: High-performance applications can generate heat in the fuel system. Proper heat shielding and routing help maintain pressure and prevent vapor lock in hot climates or track conditions.
- Support and warranty: Brand-backed technical support can be valuable, particularly for LS swap complexity. USA-based support is a plus for parts compatibility and installation questions.
In evaluating the options above, consider your horsepower goals, planned fuel strategy (return vs returnless), and whether you prefer an inline or in-tank solution. Each kit offers a distinct balance of regulator accuracy, flow capability, and installation ease, enabling a well-maired LS swap with reliable fuel delivery across street and performance applications.